Telescopes, refracting, Fraunhofer's,[ 34],[ 35], [121];
Clark's, [114] [429] [430] [433] [436]
Grubb's, [430] [433]
with bent and horizontal mountings, [436]-438
Tempel, red spot on Jupiter, [294];
comet discoveries, [327]
cometary observations, [352] [362]
Andromeda nebula, [394]
discovery of Merope nebula, [410]
Temperature, of the sun, [217]-220 [226];
of the moon, [269] [270]
of space, [270]
on Mars, [277]
Tennant, eclipse observations, [168] [169] [174]
Terby, surface of Mars, [278] [279] [281];
secondary tail of comet, [355]
Thalén, basic lines, [207];
map of solar spectrum, [210]
solar elements, [212]
Thollon, line-displacements by motion, [202] [364];
atlas of solar spectrum, [211] [440]
lunar atmospheric absorption, [264]
Thome, comet discovered by, [361]
Thomson, Sir William (Lord Kelvin), solar chemistry, [138];
magnetic influence of the sun, [161]
tidal strains, [257]
rotation of the earth, [273]
dynamical theory of solar heat, [311] [312]
Thraen, period of Wells's comet, [357]