(the “reciprocal temperature,” where

is 14,600), and the corresponding absolute temperature, in degrees centigrade.

[TABLE VIII]

Mt. W. Class Giant DwarfTemperature
Giant
Temperature
Dwarf
2.007300°
2.166770
2.086990
2.266460
2.306350
2.116920
2.306350
2.296370
2.346240
2.366190
2.485880
2.302.516340°5810
2.455970
2.715100
2.832.625170 5580
2.922.685020 5440
2.922.645020 5530
3.154730
3.094820
3.154730
3.252.764480 5300
3.204560
3.294430
3.393.034300 4840
3.483.114180 4700
3.503.054160 4790
3.544130
3.833810
3.863870
4.143530
4.333370
4.363350
4.353360
4.493250
4.453280
3.933720

The difference in temperature between giant and dwarf stars of the same spectral class is clearly shown in the foregoing tables. The relation of absolute magnitude to effective temperature within a given class must be regarded as definitely established by observation.

The temperatures for the cooler giant stars in both these lists are somewhat lower than those given for the corresponding classes in [Table V]. The temperature of

, for instance, is placed nearer to 4000° than to 4500°. The fact that the sun, a typical