108 
PROFESSOR KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
35. Phosphorus . — I have only made a few determinations with ordinary yellow phos- 
phorus, which was cast in sticks. 
Experiments with Water. Glass 1. Temperature of the Air 10 o, 9. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• 
y- 
X m 
sp. H. 
O 
o 
0 
o 
grms. 
grms. 
grms. 
grm. 
38-8 
13-5 
13-20 
10-05 
26-95 
3-075 
2-065 
1-000 
0-651 
0-208 
33-8 
12-9 
12-62 
10-03 
26-97 
„ 
„ 
,, 
55 
0-204 
35-5 
13-2 
12-91 
10-17 
26-93 
55 
2-06* 
J? 
55 
0-195 
Mean 
0-202 
The specific heat of yellow phosphorus, as deduced from these determinations, is 
somewhat greater than that found by Regnault, doubtless because in my experiments 
the upper limit of temperature, T', was nearer the melting-point of phosphorus, 44°. 
Compare § 82. 
Antimony . — Purified by Liebig’s method ; crystalline pieces. 
I. — Experiments with Naphtha A. Glass 2. Temperature of the Air 14°-7. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• y- 
X. 
sp. H. 
o 
O 
o 
0 
o 
grms. 
grm. 
grm. 
46-4 
16-0 
15-65 
13-42 
26-945 
12-245 
1-925 0-431 
0-487 
0-0539 
44-9 
15-9 
15-64 
13-54 
26-98 
5> 
55 55 
55 % 
0-0520 
44-2 
15-8 
15-53 
13-52 
26-96 
55 
1-91* „ 
Mean 
'55 
0-0496 
0-0518 
II. — Experiments with Water. Glass 1. Temperature of the Air 15° 
•8-16°-l. 
T. 
T'. 
t\ 
t. 
M. 
m. 
/• y- 
X . 
sp. H. 
0 
o 
o 
o 
grms. 
grms. 
grms. 
grm. 
45-0 
17-9 
17-60 
14-22 
26-945 
11-835 
2-095 1-000 
0-651 
0-0519 
45-1 
17-9 
17-64 
14-25 
26-96 
55 
55 55 
55 
0-0519 
45-0 
17-9 
17-64 
14-25 
26-965 
55 
55 55 
55 
0-0530 
45-4 
18-1 
17-76 
14-34 
26-955 
” 
2-085* „ 
Mean 
51 
0-0542 
0-0528 
From these determinations, the average of the means of both series of determinations, 
0-0518 and 0-0528, the number 0-0523 is the specific heat of antimony between 17° 
and 45°. 
Bismuth . — Purified by melting with nitre, and cast in small bars. In the case of 
this metal also, I have made a series of determinations with coal-tar naphtha in the glass, 
and one with water. 
After drying the stopper. 
