This ebook edition does not include illustrations. ‘In Richard Fortey’s capable hands the humble grey trilobite has been transformed into the E.T. of the Lower Palaeozoic – a remarkable and fascinating book.’ SIMON WINCHESTER Richard Fortey is one of Britain’s leading popular scientists. Life: An Unauthorised Biography, was short-listed for the Rhone Poulenc prize and has been reprinted five times. In all he writes, Fortey displays extraordinary range, delight and de*ive gifts which make complicated scientific facts and concepts not only easy to understand but a delight to absorb. Trilobite! is an unashamedly trilobito-centric view of the world unravelling the history of the exotic, crustacean-like animals which dominated the seas for three hundred million years. These arthropods witnessed continents move, mountain chains elevated and eroded; they survived ice ages and volcanic eruptions, evolving and adapting exquisitely to their environment. They watched through their crystal eyes whilst life evolved. Their own evolution calibrated geological time itself. Structured like a detective story, this is a light, but highly informative account of the wonders of scientific discovery and an engaging, quirky and fascinating introduction to evolution. Note that it has not been possible to include the same picture content that appeared in the original print version.

In the arid lands of Kenya, the social structure system associated with traditional pastoralism has evolved useful mechanisms for achieving sustainable resource utilization within fragile dryland environments. The sustainability of traditional pastoralism in Kenya is no longer feasible due to the increasing pressure on a shrinking resource base. This uncertainty with the sustainability of this traditional life style, calls for a radical shift in thinking from traditional to commercial pastoralism. Commercial pastoralism allows for the emergence of dynamic pastoralism which adapts quickly to technological changes and evolving market conditions in a fast changing pastoral environment. Whereas this futuristic form of pastoralism must recognize pastoral communities as legal entities and accord them the rights of control and disposal or transfer, it should also bestow the rights of access and use on individual pastoralists. The individualization of the right of land disposal or transfer in non-enlightened pastoral communities has led to the emergence of destitution and poverty in pastoral areas of Kenya. This book publication provides valuable information on emerging issues and options on pastoral land management in Kenya. It is based on a three year study on Land Tenure and Natural Resource Management in the Arid Lands of Kenya. It also does provide the requisite information for the formulation of a policy and legal framework on sustainable pastoral land management in Kenya.

Kenya covers a total land area of 582,646 km2. This land area is classified in terms of agricultural potential as: 12.7% of medium to high potential for agricultural production; 11.5% of arable land, subject to periodic droughts; 70.7% of drylands; and 5.6% of non-agricultural land. High population densities are more prevalent in areas of high agricultural potential than those of low potential (drylands). Most of Kenya's population (approx. 80%) lives in rural areas and therefore depends on agriculture and livestock for food and income.This book reviews sustainable technological options for land and water management and that are appropriate to soil and moisture conservation in drylands areas of Kenya. Of significant importance are: Environment and Resource Conservation in Semi-Arid Kenya; Dryland agriculture and conservation technologies in Kenya; Sustainable Soil Management Technologies for Effective Erosion Control in Semi-Arid Kenya; Development of Sustainable Conservation Techniques for Dryland Agriculture in Semi-arid Kenya; Agroforestry for Environmental Conservation in Dryland Environments of Kenya; Carbon Sequestration in Dryland Soils; Integrated Watershed Resource Management in Semi-arid Kenya; Runoff Water Management Systems for Dryland Agriculture in Semi-Arid Kenya; Land and Water Management for Poverty Alleviation: Experiences from Iiuni Watershed, Machakos County, Kenya; and Participatory Role of Communities in Sustainable Development and Management of Resources in semi - arid environments of Kenya?

This eBook features the unabridged text of ‘The Glimpse by Arnold Bennett - Delphi Classics (Illustrated)’ from the bestselling edition of ‘The Complete Works of Arnold Bennett’. Having established their name as the leading publisher of classic literature and art, Delphi Classics produce publications that are individually crafted with superior formatting, while introducing many rare texts for the first time in digital print. The Delphi Classics edition of Bennett includes original annotations and illustrations relating to the life and works of the author, as well as individual tables of contents, allowing you to navigate eBooks quickly and easily. eBook features: * The complete unabridged text of ‘The Glimpse by Arnold Bennett - Delphi Classics (Illustrated)’ * Beautifully illustrated with images related to Bennett’s works * Individual contents table, allowing easy navigation around the eBook * Excellent formatting of the text Please visit www.delphiclassics.com to learn more about our wide range of titles

It appears to me a most excellent thing for the physician to cultivate Prognosis; for by foreseeing and foretelling, in the presence of the sick, the present, the past, and the future, and explaining the omissions which patients have been guilty of, he will be the more readily believed to be acquainted with the circumstances of the sick; so that men will have confidence to intrust themselves to such a physician.

NIKOLA TESLA (1856 ~ 1943) was a Serbian American inventor, electrical engineer, mechanical engi-neer, physicist, and futurist best known for his contributions to the design of the modern alternating current (AC) electricity supply system. Tesla gained experience in telephony and electrical engineering before emigrating to the United States in 1884 to work for Thomas Edison in New York City. He soon struck out on his own with financial backers, setting up laboratories and companies to develop a range of electrical devices. His patented AC induction motor and transformer were licensed by George Westinghouse, who also hired Tesla for a short time as a consultant. His work in the formative years of electric power development was involved in a corporate alternating current/direct current "War of Currents" as well as various patent battles.The investors showed little interest in Tesla's ideas for new types of motors and electrical transmission equipment and also seemed to think it was better to develop an electrical utility than invent new systems. They eventually forced Tesla out leaving him penniless. He even lost control of the patents he had generated since he had assigned them to the company in lieu of stock. He had to work at various electrical repair jobs and even as a ditch digger for $2 per day. Tesla considered the winter of 1886/1887 as a time of "terrible headaches and bitter tears." During this time, he questioned the value of his education. Chapter 1 My Early Life: The progressive development of man is vitally dependent on invention. It is the most important product of his creative brain. Its ultimate purpose is the complete mastery of mind over the material world, the harnessing of the forces of nature to human needs. This is the difficult task of the inventor who is often misunderstood and unrewarded. But he finds ample compensation in the pleasing exercises of his powers and in the knowledge of being one of that exceptionally privileged class without whom the race would have long ago perished in the bitter struggle against pitiless elements.Speaking for myself, I have already had more than my full measure of this exquisite enjoyment, so much that for many years my life was little short of continuous rapture. I am credited with being one of the hardest workers and perhaps I am, if thought is the equivalent of labor, for I have devoted to it almost all of my waking hours. But if work is interpreted to be a definite performance in a specified time according to a rigid rule, then I may be the worst of idlers. Every effort under compulsion demands a sacrifice of life-energy. I never paid such a price. On the contrary, I have thrived on my thoughts.In attempting to give a connected and faithful account of my activities in this series of articles which will be presented with the assistance of the Editors of the Electrical Experimenter and are chiefly addressed to our young men readers, I must dwell, however reluctantly, on the impressions of my youth and the circumstances and events which have been instrumental in determining my career. Our first endeavors are purely instinctive, promptings of an imagination vivid and undisciplined. As we grow older reason asserts itself and we become more and more sys-tematic and designing. But those early impulses, although not immediately productive, are of the greatest moment and may shape our very destinies. Indeed, I feel now that had I understood and cultivated instead of suppressing them, I would have added substantial value to my bequest to the world. But not until I had attained manhood did I realize that I was an inventor..

HE who seeks to understand the character and achievement of Abraham Lincoln must begin with a study of the man’s honesty. At the base of his nature, in the tap-root and very fiber of his being, pulsed a fidelity to truth, whether of thought or of deed, peculiar to itself. So thoroughgoing was this characteristic that it seems to have begun in him where in other men it generally leaves off. Politicians without number have yielded a work-a-day obedience to the rules of honor, but there is record of no other public leader in recent times who, among the vicissitudes of a trying career, has endeav-ored to balance actions and principles with such painstaking nicety. To trace these efforts from Lincoln’s early years is to pass with him, pace for pace, over part of the road that led to distinction. As we go we shall have to take account of hap-penings, little as well as big; for every man is the sum of all his parts, and in no other way may we hope to comprehend how the esteem that began with a few rustic neighbors grew until it filled the heart of a nation. To what extent, if any, Lincoln inherited his uprightness of mind from remote ancestors will probably never be known. The bare lines of the genealogical chart afford no clues to the characters of the men and women whose names appear there. If any of the threads spun out of their several lives met and twined in the broad strand of blue that enriched his, there is no way of identifying the spinners. Less obscure, though per-haps of only passing interest, is what may be gleaned under this head about two of Lincoln’s nearer relations. His father’s brothers, Mordecai and Josiah, appear to have enjoyed general respect on account of their probity. “They were excellent men,” said one who claimed to know them intimately, “plain, moderately educated, candid in their manners and inter-course, and looked upon as honorable as any men I have ever heard of.”[i-1] Their younger brother Thomas, however, cannot be so readily portrayed. He has, like his illustrious son, been, in turn, depreciated and idealized to such a degree that the inquirer, who would reach safe conclusions in respect to him, must tread warily through a maze of contradictions. Rejecting the praise as well as the blame of hearsay histori-ans, and following the testimony of those only who knew the man, we learn from one that he was “honest”; from another that he “was regarded as a very honest man”; and still another found him “always truthful—conscientious.”[i-2] To these tributes must be added what one who was doubly connected with Thomas Lincoln had to say about him:—“I’m just tired of hearing Grandfather Lincoln abused,” said Mrs. Dowling, the daughter of Dennis Hanks and Matilda John-son, speaking to an attentive listener, not many years ago. “Everybody runs him down.”

Konu Anlat?ml? ?rnek ??zümlü Test ??zümlü Test Sorulu Karma Testli Bu kitab?, lisede okumakta olan ve üniversite s?nav?na haz?rlanmakta olan sizlere geometri dersinizde yard?mc?n?z olmas? amac?yla haz?rlad?m. Kitap 5 b?lümden olu?maktad?r. ? B?lümler; belli bir s?ralama ve sistematik bir bi?imde konu anlat?mlar? ve ?rnek ??zümleri ile ??rencilere yorum yaparak ?al??ma al??kanl???n? kazand?racak bi?imde sunulmaktad?r. Bu derste yapaca??n?z ?al??malar?n?z?n sonucunda ba?ar?l? olman?z? bekliyorsan?z a?a??daki s?ralamaya ?zen g?stererek bu kitaptaki konulara s?ras?yla ?al??man?z? ?neriyorum. Konu anlat?m s?ras?na dikkatle uyunuz. Konu anlat?m ve konu bilgilerini ezbere de?il ve ?rnek üzerinde ??züm yaparak, kavray?n?z. ??zümlü test sorular?n?, kendiniz tekrar ??zerek konu bilgilerinizi ve yorum gücünüzü geli?tiriniz. Cevapl? test sorular?n? ??zerek, cevaplar? ile kar??la?t?r?n?z, varsa yanl??lar?n?z ve eksikleriniz konu tekrar? ile do?rulay?n?z. Konu ile ilgili ba?lant?lar?, konu anlat?m s?ras?na g?re ??rendi?iniz konu bilgilerinizi unutmadan ??zümlerle geli?tirmeye ve sa?lamaya ?al???n?z. Bu y?ntemle ??rendi?imiz konu bilgilerinizi kullanarak, yorumlu bol ve de?i?ik sorular ??zünüz. Soru ??zerken ?ekle g?re ??züm de?il de verilenlere g?re gerekti?inde yard?mc? ?izimlerle (a??ortay, dik do?ru ve paralel do?ru… gibi) ??zümü kolayla?t?rarak, bilinmeyeni en k?sa ve kolay yoldan bulmaya ?al???n?z. ? Sevgili ??rencilerim, umar?m bu kitab?m hayat?n?zda hedefledi?iniz yere ula?man?zda sizlere yard?mc? olacakt?r. De?erli meslekta?lar?m bu kitab? sizlerinde de?erli g?rü?lerinize sunarken ?al??malar?n?zda ba?ar? dileklerimle ele?tirilerinizi de beklerim.????????? ?????????????????????????????????????????????????????????????????????????????????????????? Erol Gedikli Mat. ??retmeni

Medicin? este un domeniu aflat ?ntr-o continu? schimbare, prin experien?a clinic? ?i studiile care l?rgesc mereu orizontul de cunoa?tere.Cartea de fa?? ?i ofer? viitorului asistent medical oportunitatea ?nsu?irii unor no?iuni de baz? din domeniul medicinii de laborator, la care se adaug? modalit??ile de prevenire ?i combatere a bolilor infec?ioase, precum ?i posibilit??ile actuale de tratare a acestora.Lucrarea comprim? ?i integreaz? informa?ii importante din domeniul virusologiei, bacteriologiei, parazitologiei, micologiei ?i imunologiei, fiecare dintre aceste ramuri cunosc?nd o dezvoltare independent? remarcabil? ?n ultimele decade.?ntregul material respect? programa de preg?tire a asisten?ilor medicali, adres?ndu-se tuturor elevilor ?colilor sanitare, indiferent de specialitate.

Geriatrie ?i geropatologie pentru asisten?i medicali vine ?n sprijinul elevilor ?colilor postliceale sanitare, la baza sa afl?ndu-se nevoia de cunoa?tere ?i perfec?ionare a viitorului asistent medical. Cre?terea demografic? a popula?iei v?rstnice impune o bun? cunoa?tere a particularit??ilor v?rstei a treia, at?t de publicul larg, c?t mai ales de personalul sanitar.Aceast? lucrare respect? programa de preg?tire a asisten?ilor medicali, ad?ug?nd ?i o serie de informa?ii care s? confere o perspectiv? unitar? asupra particularit??ilor fiziologice, patologice ?i terapeutice ale v?rstei a treia. Sunt abordate aspectele medico-sociale complexe ale procesului de ?mb?tr?nire, dar ?i evenimente cu un important r?sunet ?n via?a psiho-afectiv? a individului, precum pensionarea sau integrarea v?rstnicului ?n institu?ii specializate.Abordarea medico-psiho-social? a problematicii v?rstnicului ofer? o viziune integrat? a informa?iei, util? at?t elevilor ?colilor sanitare, c?t ?i asisten?ilor medicali. Totodat?, poate fi considerat un ?ndrumar util ?i studen?ilor facult??ilor de medicin? general? ?i farmacie, asisten?ilor sociali, psihologilor, medicilor de familie sau de alte specialit??i etc.

Aceast? carte, bazat? pe 20 de ani de cercetare clinic? ?i ?tiin?ific? ?n ce prive?te rolul apei ?n organism, prezint? descoperirea extraordinar? c? deshidratarea cronic? neinten?ionat? produce stres, dureri cronice ?i multe boli degenerative ?nso?ite de durere. Gura uscat? nu este singurul semn de deshidratare; este gre?it s? a?tepta?i p?n? vi se face sete. Ve?i afla care sunt semnalele emise de organism c?nd duce lips? de ap?. Corectarea aportului de ap? – da, de ap?! ap? natural?, c?t mai curat? – v? poate ajuta s? tr?i?i mai s?n?tos, bucur?ndu-v? de o via?? lipsit? de durere. Ve?i ?nv??a: cum s? preveni?i ?n mod natural boli precum astmul bron?ic, alergiile, hipertensiunea arterial?; cum s? ameliora?i durerile, inclusiv pirozisul, durerea de spate, durerea artritic?, durerea din colit? ?i migrenele; cum s? folosi?i apa pentru a preveni ?i combate ?mb?tr?nirea prematur?; cum s? elimina?i f?r? efort kilogramele ?n plus, natural ?i f?r? restric?ii alimentare.

Here's a spooky story: Slenderman has been seen around the world for over 2,000 years. This book - dedicated to the authors who tragically and violently lost their lives shortly after writing it - aims to tell you everything you want to know about Slenderman. What does he look like? What are his powers? What is his purpose? All this and more can be found within these very pages. Including excerpts from historical Slenderman documents (such as the 15th century poem that ends with the words 'He watches you yet has no sight, He taketh you away at night') this is the surefire way to learn all about Slenderman. The question - of course - is dare you read it?

Renun?a?i la p?ine, nu mai m?nca?i cereale, abandona?i glutenul! Mesajul este c?t se poate de simplu – fugi de gluten ?i nu numai c? te vei sim?i mai bine, dar ?i vei face o favoare creierului. Aceast? teorie extrem de controversat?, care demonteaz? toate ipotezele nutri?ionale moderne, propulseaz? cartea lui Perlmutter pe primul loc ?n topul bestsellerurilor New York Time, ajuns? la al nou?lea tiraj ?i publicat? ?n 15 ??ri. Renumitul neurolog David Perlmutter dezv?luie un adev?r ?ngropat foarte mult timp ?n literatura de specialitate: carbohidra?ii distrug creierul. ?i nu numai carbohidra?ii nes?n?to?i, dar chiar ?i cei s?n?to?i, precum cerealele integrale care pot provoca demen??, ADHD, anxietate, migrene, depresie ?i multe altele. Dr. Perlmutter explic? mecanismele care au loc la nivelul creierului atunci c?nd acesta are de a face cu ingredientele comune din p?inea cea de toate zilele ?i din bolul cu fructe, de ce gr?simea ?i colesterolul sunt benefice pentru creier ?i cum pot stimula acestea regenerarea celular? la orice v?rst?. Oferind o privire ?n profunzime asupra felului ?n care putem prelua controlul ?genelor noastre inteligente“ prin alegeri specifice alimentare ?i de stil de via??, autorul demonstreaz? cum se pot fi ?nfr?nge cele mai de temut maladii ale noastre f?r? medicamente. ?n sus?inerea teoriilor expuse ?n prima parte a c?r?ii, dr. Perlmutter a definitivat un plan revolu?ionar de 4 s?pt?m?ni prin care ne ?nva?? cum s? reprogram?m destinul nostru genetic pentru ob?inerea performan?elor ?n ceea ce prive?te starea de s?n?tate. Concluzia este ?ncurajatoare – nu depinde dec?t de noi s? r?m?nem ?n deplin?tatea facult??ilor mintale p?n? la sf?r?itul vie?ii.

ntr-un trafic incontrolabil, a intra pe contrasens nu e un lucru de mirare. Ce te faci ns dac exist riscul s dai nas n nas cu… favorita preedintelui Cine pltete asigurarea“Liviu Brtescu nu se teme de sanciuni. Nu folosete cuvinte dantelate, nu ridic pe nimeni n slvi. El doar se strduiete s conduc atent…

De unde vine universul? Ce a fost ?naintea lui? Ce ne va aduce viitorul? ?ntr-un story cosmologic care captiveaz? ?n aceea?i m?sur? ?n care l?mure?te, autorul explic? cele mai recente progrese revolu?ionare ale ?tiin?ei, ce r?stoarn? din temelii probleme filosofice esen?iale. Observa?iile experimentale uluitoare ?i noile teorii fascinante sunt descrise ?ntr-o manier? accesibil? ?i sugereaz? nu doar c? din nimic poate s? ia na?tere ceva, dar ?i c? ?ntotdeauna din nimic va lua na?tere ceva. Un fascinant antidot la g?ndirea filosofic? ?i religioas? perimat?, Universul din nimic este o contribu?ie provocatoare la controversa privind existen?a lui Dumnezeu ?i a tuturor lucrurilor care ne ?nconjoar?. ?Uita?i-l pe Iisus“, argumenteaz? Krauss, ?stelele au murit pentru ca voi s? v? pute?i na?te“. ?Suntem martorii unei revolu?ii cosmologice la fel de important? precum revolu?ia copernican?. Avem acum la dispozi?ie acest ghid substan?ial ?i captivant, o lucrare memorabil?.“ – Ian McEwan

Lambrecht Kálmán k?nyve ma is lebilincsel? stílusban és tudományt?rténeti korrektséggel mutatja be ezen csodálatos tudomány kialakulását és fejl?dését, tárja elénk nagy alakjainak eredményeit. Mégsem száraz adatfelsorolás ez a k?nyv, hanem izgalmas utazás, ahol a tárgy ellenére az ember, a kutató, a gyarló tudós áll a k?zéppontban. Megismerjük vívódásait, harcát az anyaggal, tévedéseit és csatáit hasonló lelk? vetélytársaikkal. Az ?svilági élet tehát igencsak evilági szellemeken keresztül jutott el oda, hogy aJurassic park megszülethetett. K?vessük ezt a t?bb évszázados fejl?dést egy magával ragadó tollú ismeretterjeszt? vezetésében. Lehet, hogy néhány k?vetkeztetése ma már nem állja meg a helyét, ám ez mit sem von le abból az értékb?l, amit stílusa és tudományt?rténeti ?sszefoglalója ma is jelent. Izgalmas olvasmány egy ma igen népszer? tudomány kezdeteir?l.

A Magyarország f?ldtana cím? k?nyv els?sorban az egyetemi szint? áttekint? f?ldtani oktatás számára készült tank?nyvként. Az elektronikus kiadás lehet?ségeit kihasználva a k?tet a legfrissebb ismereteket szintetizálja és ad hazánk f?ldtani felépítésér?l korszer? áttekintést, amelyet haszonnal forgathatják nemcsak egyetemi hallgatók, hanem a téma iránt érdekl?d? nem szakmabeliek egyaránt. A k?tet szerz?i, Budai Tamás és Konrád Gyula aktív és nagy tapasztalattal rendelkez? terepi geológusok, akik oktatási tapasztalatokkal egyaránt rendelkezve megfelel? arányban vegyítik a terepi tapasztalatokat az oktatás igényeivel.A megértést számos ábra teszi teljessé. (a Kiadó)

The publication of Darwin’s The Origin of Species in 1859 marked a dramatic turning point in scientific thought. The volume had taken Darwin more than twenty years to publish, in part because he envisioned the storm of controversy it was certain to unleash. Indeed, selling out its first edition on its first day, The Origin of Species revolutionized science, philosophy, and theology. Darwin’s reasoned, documented arguments carefully advance his theory of natural selection and his assertion that species were not created all at once by a divine hand but started with a few simple forms that mutated and adapted over time. Whether commenting on his own poor health, discussing his experiments to test instinct in bees, or relating a conversation about a South American burrowing rodent, Darwin’s monumental achievement is surprisingly personal and delightfully readable. Its profound ideas remain controversial even today, making it the most influential book in the natural sciences ever written—an important work not just to its time but to the history of humankind.

"Un ghid absolut esen?ial pentru omenire. ?n?elepciunea pu?in cunoscut? care se reg?se?te ?n aceast? carte poate pune cap?t suferin?ei umane pe ?ntregul Glob, salv?nd oamenii de ravagiile pe care industria cancerului continu? s? le produc? din cauza ineficien?ei depline de care d? dovad?." – Mike Adams, Director al Laboratorului ?tiin?ific CWC Labs "Ty Bollinger ofer? pacien?ilor, oamenilor de ?tiin?? ?i celor care activeaz? ?n domeniul s?n?t??ii o explica?ie excelent? privitor la motivul pentru care viziunea actual? pe care o avem despre cancer este gre?it? ?i arat? ?n acela?i timp cum poate fi prevenit, prezent?nd o gam? larg? de op?iuni de tratament, care sunt mult mai eficiente ca raport risc-beneficii cost ?n compara?ie cu protocoalele de oncologie curente. Cartea de fa?? poate fi pentru tine un ghid valoros care s? te ajute s? previi sau chiar s? stopezi aceast? boal?. Cancerul poate fi ?nvins, iar Ty ne arat? cum." – Patrick Quillin, Ph.D., R.D., C.N.S., F.A.C.N., autor al lucr?rii ?Lupt? ?mpotriva cancerului prin alimenta?ie” "?Adev?rul despre cancer? este ghidul necesar pentru prevenirea, tratamentul ?i eradicarea cancerului folosindu-ne de leacurile oferite de Dumnezeu. ?n aceast? carte revolu?ionar?, Ty Bollinger dezv?luie o ?ntreag? gam? de metode naturale de amplificare a imunit??ii ?i de energizare a trupului pentru a ?nvinge cancerul. Cite?te aceast? carte! S-ar putea s?-?i salveze via?a." – Josh Ax, D.C., autor al lucr?rii ?Eat Dirt” "Cartea lui Ty, ?Adev?rul despre cancer?, este o adev?rat? revela?ie. Pe l?ng? faptul c? ofer? pacien?ilor speran?? pentru viitor, le pune de asemenea la dispozi?ie informa?iile ?i resursele necesare pentru prevenirea ?i combaterea cancerului. Primul pas spre s?n?tate este autovindecarea, iar aceast? carte este una dintre cele mai bune c?r?i de auto-vindecare de pe pia??." – Leigh Erin Connealy, M.D.

In 1861, Henry Dircks, a civil engineer, of London, published a work entitled "Perpetuum Mobile; or, Search for Self-Motive Power, During the Seventeenth, Eighteenth and Nineteenth Centuries." The book contains 599 pages, and was followed in 1870, by a second series by the same author entitled "Perpetuum Mobile, or a History of the Search for Self-Motive Power from the Thirteenth, to the Nineteenth Century." In these two books there is amassed a wonderful amount of material showing on the part of the author diligence, great patience and wide and thorough search.The author of these works was not enamoured of his subject, and his books clearly show that he was not writing them because of any interest he had in the subject of Perpetual Motion. On the contrary, they appear to have been written because of a deep detestation entertained by the author for the subject of Perpetual Motion, and a contemptuous pity for any one seriously interested in the subject. Mr. Dircks's works may be said to be the works of a scold. His sentiments were deep, and his impulses strong, which accounts for the vast amount of labor he did in the preparation of his books. Those books are now out of print, and it is believed by the author of this book that they may well remain so. They contain much material that no one would be justified in wading through. The most complicated mechanisms devised by enthusiastic dreamers are shown in the same detail with which the inventors described them in presenting them to the public, or to the patent offices. Little is to be gained by this. So complicated are many of the devices that only technically trained engineers could read them understandingly, and few technically trained engineers are now greatly interested in self-motive power devices. We believe that every useful or interesting purpose is served if enough devices are collected, classified and presented to show the various principles relied upon by the inventors; with an explanation of why they failed—i. e., wherein the principles relied upon are wrong, and while possibly not out of harmony with any mechanical principles then known, are entirely out of harmony with principles since discovered and now well known. In the preparation of this volume a vast amount of the information furnished by the two works of Mr. Dircks has been rearranged, reclassified, and used.Everyone who has to any extent, by environment, associated with the mass of people who are not technically educated, knows that the persons who are still interested in the subject of Perpetual Motion, and who still seek its attainment, are not technically trained engineers or mathematicians, but for the greater part untrained people of naturally strong mechanical sense, and of natural mechanical and mathematical adaptation.This book is written for the perusal of that large class of people. It is not designed as an argument either for or against the possibility of the attainment of Perpetual Motion. The author is content to classify and present—clearly, it is hoped—the leading endeavors that have been known in that field of effort, and to explain their failure. It is believed by the author that the perusal of the present volume by anyone whose mind has been attracted by the subject of Perpetual Motion will result in an enlightenment, and, it is also believed, will have a tendency to direct his mind from a struggle with theories long ago exploded, and may result in directing his efforts to things practical, and not without hope of attainment.This work is offered only to minds mechanically or mathematically inclined. It is not even hoped that it will interest people who prefer fiction to fact, nor people who read simply for idle entertainment. ABOUT AUTHOR: The author has no apology to offer for the production of this book. He has spent his life in environments that have brought him into constant contact with mechanics, artisans and laborers as well as professional men, engineers, chemists and technical experts of various types. He knows a great many men—young men, for the most part—are constantly working on the old, old problem of Perpetual Motion; that much money, and much time are being spent in search of a solution for that problem which all scientific and technical men tell us is impossible of solution.It is believed by the author that a classification and presentation of selected groups of the devices produced in the past by which it was by the inventor believed, self-motive power had been attained, will save much work in fields already thoroughly exploited.So far as the author knows no book on the subject has appeared since 1870. The various encyclopedias published contain articles on the subject, but they are necessarily brief, and not satisfying to young men who have become interested in the subject.

CURIOUS creatures of Animal Life have been objects of interest to mankind in all ages and countries; the universality of which may be traced to that feeling which "makes the whole world kin." The Egyptian records bear testimony to a familiarity not only with the forms of a multitude of wild animals, but with their habits and geographical distribution." The collections of living animals, now popularly known as Zoological Gardens, are of considerable antiquity. We read of such gardens in China as far back as 2,000 years; but they consisted chiefly of some favourite animals, such as stags, fish, and tortoises. The Greeks, under Pericles, introduced peacocks in large numbers from India. The Romans had their elephants; and the first giraffe in Rome, under C?sar, was as great an event in the history of zoological gardens at its time as the arrival in 1849 of the Hippopotamus was in London. The first zoological garden of which we have any detailed account is that in the reign of the Chinese Emperor, Wen Wang, founded by him about 1150 A.D., and named by him "The Park of Intelligence;" it contained mammalia, birds, fish, and amphibia. The zoological gardens of former times served their masters occasionally as hunting-grounds. This was constantly the case in Persia; and in Germany, so late as 1576, the Emperor Maximilian II. kept such a park for different animals near his castle, Neugebah, in which he frequently chased.Alexander the Great possessed his zoological gardens. We find from Pliny that Alexander had given orders to the keepers to send all the rare and curious animals which died in the gardens to Aristotle. Splendid must have been the zoological gardens which the Spaniards found connected with the Palace of Montezuma. The letters of Ferdinand Cortez and other writings of the time, as well as more recently "The History of the Indians," by Antonio Herrera, give most interesting and detailed accounts of the menagerie in Montezuma's park. The collections of animals exhibited at fairs have added little to Zoological information; but we may mention that Wombwell, one of the most noted of the showfolk, bought a pair of the first Boa Constrictors imported into England: for these he paid 75l., and in three weeks realised considerably more than that sum by their exhibition. At the time of his death, in 1850, Wombwell was possessed of three huge menageries, the cost of maintaining which averaged at least 35l. per day; and he used to estimate that, from mortality and disease, he had lost, from first to last, from 12,000l. to 15,000l. Our object in the following succession of sketches of the habits and eccentricities of the more striking animals, and their principal claims upon our attention, is to present, in narrative, their leading characteristics, and thus to secure a willing audience from old and young.