A CATALOGUE OF OBSERVATIONS OF LUMINOUS METEORS, 329 
Taste IT. 
Beginning. End. 
No. ltz.:1.¢:.| Distance | i Distance 
Lat. N. Long. Pee in) from Lat. N. Long. poet from 
mues- | Hawkhurst. mies. | Hawkhurst. 
A ay miles, Gi; or ee mniles 
1 51 2 0 39 E. 86 86 50 42 018 E. 58 66 
2 51 10 0 2W. 73 79 50 48 0 36 W. 44 67 
3 50 53 0 55 W. Vie 95 49 54 1 56 W. 53 143 
4 50 6 a on Ws: 114 173 49 33 2 39 W. 73 188 
in 52 14 3 8E. 55 154 51 55 2 51E 25 120 
6 51 9 0 33 W. 87 99 50 56 1 3W 84 108 
7 52 14 1 20 W. 71 135 5L 57 1 57 W. 52 134 
8 53 34 0 2W. 55 188 53 32 0 52 W. 42 188 
9 51 48 1 30 E. 131 149 51 8 0 35 E. 66 66 
10 50 51 0 0 63 68 50 20 0 27 W. 53 83 
11 50 56 0 15 W. 109 114 50 42 0 41 W. 62 83 
12 51 51 1 45 E. 122 146 51 6 0 35 E. 55 55 
13 | 51 26 0 2W. 79 87 50 57 0 37 W. 58 76 
14 51 13 0 OE. 64 66 51 3 0 2W. 53 58 
15 51 30 i heey aOR 72 84 51 16 0 48 E. 60 64 
16 51 7 1 35 W. 85 124 50 50 2 24 W. 83 151 
17 oo s4, >| ae 8 Ei: 86 179 52 49 1 33 E. 68 149 
18 51 57 0 9W. 76 103 51 41 0 43 W. 71 99 
19 51 18 1 52 W. 62 120 50 56 1 55 W. 35 M11 
20 50 59 0 24 W. 86 95 50 14 118 W. 65 | 122 
From the additional Observations. 
3 50 54 051 W. 70 91 49 34 2 21 W. 62 172 
10 50 51 0 IE. 62 67 50 20 0 25 W. 53 83 
12 51 42 1 37£E 102 123 51 6 0 36 E. 50 51 
13 51 24 0 1€E 74 81 50 52 0 36 W. 59 77 
The light of full moon has been equated by Sir John Herschel (Cape Ob- 
servations, p. 353 et seq.) to 6852 x Sirius, 54,816 x a Lyre, 78,770 x Altair, 
160,000 x a Persei, and to 318,900 x Cor Caroli. It is further compared in 
this place to a flame consuming 43 cubic feet per hour of ordinary coal-gas 
at a distance of 15 yards, or to a flame consuming 17:2 cubic feet of coal-gas 
per second, at the distance of a mile. 
According to Despretz (quoted by Brande, ‘ Manual of Chemistry,’ 1848, 
p. 275), a single cubic foot of ordinary coal-gas containing 147 grains of pure 
carbon and 63 grains of pure hydrogen, would raise the temperature of 677 lbs. 
of distilled water 1° Fahrenheit by its combustion in atmospheric air. The 
mechanical equivalent of this quantity of heat is nearly 522,000 foot- 
pounds, of which 55,675 represent the dynamical energy of a grain weight 
of matter animated by a velocity of thirty miles per second. A single cubic 
foot of coal-gas would, on this assumption, suffice to arrest the motion of 
9-378 grains weight of matter moving with a geocentric velocity of thirty 
miles per second. The weights of the last column are therefore found by 
multiplying the numbers of the preceding column by the constant factor 
9°378 grains. 
