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This eBook from the Gutenberg Project consists of approximately 105 pages of information about Scientific American Supplement, No. 829, November 21, 1891.

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Table of Contents
Section	Page

Start of eBook	1
THE SUN’S MOTION IN SPACE.	1
ANIMAL ORIGIN OF PETROLEUM AND PARAFFIN.	6
THE ORIGIN OF PETROLEUM.[1]	7
THE COLORADO DESERT LAKE.	11
HEMLOCK AND PARSLEY.	13
THE EREMURI.	15
RAPHIDES, THE CAUSE OF THE ACRIDITY OF CERTAIN PLANTS.	16
THE WHALE-HEADED STORK.	18
THE CALIFORNIA RAISIN INDUSTRY.	21
COLD AND MORTALITY.	28
ANIMAL POWER AT DIFFERENT PERIODS OF LIFE.	30
FALL OF TEMPERATURE—MODE OF ACTION.	32
EXTRACTION OF HEAT.	32
SUPPRESSED OXIDATION.	33
MECHANICAL COLD.	35
COMBINED EFFECTS.	35
SOME SIMPLE RULES.	37
THE TREATMENT OF GLAUCOMA.	38
A TWIN SCREW LAUNCH RUN BY A COMPOUND ENGINE.	38
IMPROVEMENTS IN THE CONSTRUCTION OF RIVER AND CANAL BARGES.	39
WELDON’S RANGE FINDER.	42
WHEELS LINKED WITH A BELL CRANK.	44
THE DECORATIVE TREATMENT OF NATURAL FOLIAGE.[1]	45
THE CYCLOSTAT.	53
MERCURY WEIGHING MACHINE.	55
REEFING SAILS FROM THE DECK.	56
A NEW PROCESS FOR THE BLEACHING OF JUTE.	57
	58
PRIMARY BATTERIES.	58
SECONDARY BATTERIES.	59
ON THE ELIMINATION OF SULPHUR FROM PIG IRON.[1]	60
ON THE OCCURRENCE OF TIN IN CANNED FOOD.	63
METHOD.	64
RESULTS OF EXAMINATION.	64
NEW PROCESS FOR THE MANUFACTURE OF CHROMATES.	68
A VIOLET COLORING MATTER FROM MORPHINE.	70
LIQUID BLUE FOR DYEING.	70
A NEW CATALOGUE OF VALUABLE PAPERS	71
THE SCIENTIFIC AMERICAN	71
BUILDING PLANS AND SPECIFICATIONS.	71
THE	72
USEFUL ENGINEERING BOOKS	72
PATENTS!	72

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