BappickKER—On the Changes of the Radiation of Heat from the Moon. 
APPENDIX ADDED IN THE PRESS. 
Wire Prate X. 
331 
Since the above was written the variation of the total light from the moon, 
during her advance through the penumbra and the shadow, and her emergence 
therefrom, has been calculated approximately and compared with the heat 
observed by Dr. Boeddicker at the corresponding times. 
The results are embodied in the Table below, and exhibited graphically in 
Plate X :— 
@’s Heat in °/, | €’s Heat in °/, lee: ' €’s Heat in °/,| €’s Heat in °/, 
Sid. Time. | €’s Light. Full Moon Full Moon | Sid. Time. | @’s Light. Full Moon Full Moon 
= 358°9. = 312. = 358°9. = Bil. 
H. M. H M. 
6* | 21 17°5 4:83 6:8 8-0 a3 34:22 25:2 29-0 
5* 2:96 5:7 6-7 lea 40°40 31:0 35-5 
4*| 91 25 1:63 4:7 55 vhs 46°94 37-0 42:3 
3* 0-75 4-0 4:7 | 16 Oma 53°56 43:0 49-4 
Q* 0:26 3°4 3:8 | 47 60:08 49-6 56-6 
1* 0-05 leas 66-28 55°9 64-1 
o* | 21 40 0-00 | 19 72°02 61:3 70°7 
0 DRY 4183 6-00 | 20 0 28 77°39 66°6 767 
1 0:05 21 82:03 71:2 81:7 
2 0-26 1:2 1-2 22 86:25 74-4 85-4 
3 0°75 1:5 15 | 23 89°68 76°5 88-1 
4 98 28 1:63 1:9 1:9 | 24 0 43 92°55 78:4 90-0 
5 2:96 26 2-7 | 25 94:87 79°7 91-4 
6 4-83 3-4 3-9 26 96°66 80°8 92°9 
Ff PY | 4:9 5:6 27 98°00 81:9 94-1 
8 23 43 10°31 6:8 7°8 28 0 58 98-92 82:8 95-2 
a 13:96 9-1 10°6 29 99°51 83:6 96-0 
10 18:20 12:1 13°9 30 99°83 84:0 96°8 
11 | 23:08 15:6 18-1 31 99°97 846 97-4 
12 | 23 58 28°37 20-2 2372 32 ie 100-00 85:2 98-0 
128 100-00 864 99°3 
| 1 43 100-00 86:8 99°7 
The Table was obtained thus:—First, upon a sheet of paper circles were 
described, with radii proportional to the apparent semi-diameters of the sun and 
earth as seen from the moon, and by means of Amsler’s planimeter the exposed 
