Laplace, his "Systeme du Monde," 48, 62, 92, 141; mass of the comet of 1770,
107; on the required velocity of masses projected from the Moon, 121, 122;
on the altitude of the boundaries of the atmosphere of cosmical bodies, 141;
zodiacal light, 141; lunar inequalities, 166; the Earth's form and size
inferred from lunar inequalities, 168, 169; his estimate of the mean height
of mountains, 301; density of the ocean required to be less than the earth's
for the stability of its equilibrium, 305; results of his perfect theory of
tides, 306.
Latin writers, their use of the term "Mundus," 70, 71.
Latitudes, Northern, obstacles they present to a discovery of the laws of
Nature, 36; earliest acquaintance with the governing forces of the physical
world, there displayed, 36; spread from thence of the germs of civilization,
36.
Latitudes, tropical, their advantages for the contemplation of nature, 33;
powerful impressions, from their organic richness and fertility, 34;
facilities they present for a knowledge of the laws of nature, 35; brilliant
display of shooting stars, 113.
Laugier, his calculations to prove Halley's comet identical with the comet
of 1378, described in Chinese tables, 109.
Lava, its mineral composition, 234.
Lavoisier, 62.
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