Scientific American Supplement No. 822, October 3, 1891 eBook

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Start of eBook	1
	1
THE REDOUTABLE.	2
ARMOR PLATING ON BATTLESHIPS: FRANCE AND GREAT BRITAIN.	3
DEMOLITION OF ROCKS UNDER WATER WITHOUT EXPLOSIVES-LOBNITZ SYSTEM.[1]	5
PROGRESS IN ENGINEERING.	9
COAL MINES.	9
STEAM TRAMS AND ELECTRIC TRAMS.	10
IMPROVED CHANGEABLE SPEED GEARING.	10
ELECTRICAL STANDARDS.	11
THE TWO OR THREE PHASE ALTERNATING CURRENT SYSTEMS.	15
THE LONDON PARIS TELEPHONE.[1]	19
THE MANUFACTURE OF PHOSPHORUS BY ELECTRICITY.	25
NEW BLEACHING APPARATUS.	29
	32
EYESIGHT: ITS CARE DURING INFANCY AND YOUTH.[1]	40
THE WATER MOLECULE.[1]	54
THE FORMATION OF STARCH IN LEAVES.	57
STANDARDS AND METHODS FOR THE POLARIMETRIC ESTIMATION OF SUGARS.[1]	59
I.—INSTRUMENTS AND APPARATUS.	61
II.—SKILLED OBSERVERS.	62
III.—ARRANGEMENT OF LABORATORIES.	63
IV.—METHODS OF MANIPULATION.	63
DIRECTIONS FOR THE POLARIZATION OF SUGAR.	64
PREPARATION OF THE SUGAR SOLUTION FOR POLARIZATION.	66
SUMMARIZED SOURCES OF ERROR.	70
THE GRAND FALLS OF LABRADOR.	71
ANTS.	76
A GEM-BEARING GRANITE VEIN IN WESTERN CONNECTICUT.	79
THE STUDY OF MANKIND.	82
CLASSIFICATION.	82
DIFFERENCES IN SKULLS.	83
CONNECTION OF LANGUAGE AND PHYSICAL CONFORMATION.	84
TRAVELERS’ IMPRESSIONS.	85
A NEW CATALOGUE OF VALUABLE PAPERS	85
THE SCIENTIFIC AMERICAN	85
BUILDING PLANS AND SPECIFICATIONS.	86
USEFUL ENGINEERING BOOKS	87
PATENTS!	87

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Scientific American Supplement No. 822, October 3, 1891 from Project Gutenberg. Public domain.