Lamont, magnetic period, [127] [128]
Lamp, ashen light on Venus, [256]
Langdon, mountains of Venus, [253]
Langley, solar granules, [165];
corona of 1878 [176]
spectroscopic effects of solar rotation, [202]
infra-red spectrum, [210] [223] [224]
experiments at Pittsburg, [221]
bolometer, [222]
distribution of energy in spectrum, [224] [225]
atmospheric absorption, [224] [225] [276]
solar constant, [225]
lunar heat-spectrum, [269]
temperature of lunar surface, [270]
age of the sun, [312]
Laplace, lunar acceleration, [2],[271];
Système du Monde, [5]
nebular hypothesis,[ 25], [308] [309] [313] [314] [322]
stability of Saturn's rings,[ 85], [298]
solar atmosphere,[ 94], [221]
Lexell's comet, [106] [367]
solar distance by lunar theory, [230]
origin of meteors, [328]
of comets, [370]
Lassell, discovery of Neptune's satellite,[ 83];
of Hyperion,[ 85]
Saturn's dusky ring,[ 86]
observations at Malta,[ 87], [434]
reflectors, [114]
equatoreal mounting, [121]
Latitude, variation of, [258] [259]
Laugier, period of 1843 comet, [105];
solar rotation, [146]
Le Chatelier, temperature of the sun, [219]
Lescarbault, pseudo-discovery of Vulcan, [248];
halo round Venus, [254]