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Scientific American Supplement, No. 433, April 19, 1884电子书

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作       者:Various

出版时间:2018-02-27

字       数:17.4万

所属分类: 教育 > 外语 > 实用英语

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In 1875 Lieutenant Weyprecht of the Austrian navy called the attention of scientific men to the desirability of having an organized and continual system of hourly meteorological and magnetic observations around the poles. In 1879 the first conference of what was termed the International Polar Congress was held at Hamburg. Delegates from eight nations were present--Germany, Austria, Denmark, France, Holland, Norway, Russia, and Sweden.
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THE FRENCH SCIENTIFIC STATION AT CAPE HORN.

THE ELECTRIC RAILWAY AT VIENNA.

INSTRUCTION IN MECHANICAL ENGINEERING.

IMPROVED DOUBLE BOILER.

THE GARDNER MACHINE GUN.

CLIMBING TRICYCLES.

SUBMARINE EXPLORATIONS.

CABLE GRAPNEL.

WRETCHED BOILERMAKING.

A THREADED SET COLLAR.

PNEUMATIC MALTING.

NON-SPARKING KEY.

NEW INSTRUMENTS FOR MEASURING ELECTRIC CURRENTS AND ELECTRO-MOTIVE FORCE.

SECONDARY BATTERIES.

ACETYLENE FROM IODOFORM.

WHEN DOES AN ELECTRICAL SHOCK BECOME FATAL?

ROBERT CAUER'S STATUE OF LORELEI.

REDUCING AND ENLARGING PLASTER CASTS.

STRIPPING THE FILM FROM GELATINE NEGATIVES.

NEW ANALOGY BETWEEN SOLIDS, LIQUIDS, AND GASES,

HYDROGEN AMALGAM.

TREATMENT OF ORES BY ELECTROLYSIS.

A PEOPLE WITHOUT CONSUMPTION, AND SOME ACCOUNT OF THEIR COUNTRY--THE CUMBERLAND TABLELAND.

THE TREATMENT OF HABITUAL CONSTIPATION.

THE PYRAMIDS OF MEROE.

THE PROLIFICNESS OF THE OYSTER.

RED SKY.

A THEORY OF COMETARY PHENOMENA.

ON COMETS.

FORMS OF IVY.

PROPAGATING ROSES.

A FEW OF THE BEST INULAS.

FRUIT GROWING.

COARSE FOOD FOR PIGS.

METE KINGI.

LAKE TAHOE.

THE SCIENTIFIC AMERICAN SUPPLEMENT.

PATENTS.

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