PEOFESSOE KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
141 
and absorbent of naphtha. In these experiments the following numbers were 
obtained. 
Experiments with Naphtha A. Glass 2. Temperature of the Air 12°T-12°-4. 
T. 
T'. 
t'. 
t . 
M. 
m. 
/• 
y 
X . 
sp. H. 
o 
O 
o 
o 
grms. 
grms. 
grms. 
grm. 
44-9 
14-8 
14-53 
11-23 
26-935 
2-69 
2-295 
0-431 
0-487 
0-549 
45-9 
14-9 
14-62 
11-23 
26-94 
99 
99 
99 
,, 
0-546 
47-6 
14-6 
14-32 
10-70 
26-925 
99 
2*445* 
99 
99 
0-531 
46-4 
15-0 
14-73 
11-24 
26-98 
99 
2-425f 
99 
0-545 
The numbers for the specific heat of nitrate of ammonia are throughout greater 
than those found between 14° and 31°; and probably because through the heating to 
45° or 48° the change was set up during the experiments. Experiments with nitrate of 
ammonia in which, by drying at 100°, this change had been effected before making the 
experiments, gave numbers which more closely approach the first set, though somewhat 
greater, and on the whole not very concordant. I obtained in a series of experiments 
the following results with dull milky crystals dried at 100°. 
Experiments with ' 
Naphtha A. Glass 1. 
Tempe: 
rature 
of the Air 9°-7. 
T. 
T'. 
t\ 
t. 
M. m. 
/. 
y- 
X. 
sp. H. 
O 
O 
o 
o 
grms. grms. 
grms. 
grm. 
45-0 
12-3 
11-95 
8-96 
26-975 '2-03 
1-77 
0-431 
0-651 
0-519 
45-6 
12-3 
12-03 
9-01 
26-935 
33 
99 
„ 
0-507 
44-9 
12-6 
12-26 
9-32 
26-965 
1-90* 
99 
99 
0-485 
45-1 
12-5 
12-24 
9-31 
26-98 
33 
99 
99 
0-470 
45-4 
12-6 
12-33 
9-32 
26-965 „ 
2-08$ 
99 
99 
0-457 
Crystals dried at 100°-110°, which apparently had been softened, gave the 
following numbers. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 12°T-12°-4. 
T. 
T\ 
t'. 
t. 
M. 
m. /. y. 
x. sp. H. 
O 
0 
o 
0 
grms. 
grms. grms. 
grm. 
44-6 
14-2 
13-93 
11-03 
26-97 
2-095 1-91 0-431 
0-651 0-524 
43-6 
14-4 
14-13 
11-42 
26-935 
99 99 99 
„ 0-489 
47-8 
14-8 
14-54 
11-44 
26-975 
„ 2-04* „ 
0-479 
46-5 
14-6 
14-32 
11-23 
26-96 
„ 2-02f „ 
„ 0-520 
I do not know the nature of the change which nitrate of ammonia undergoes fust 
above 40°. 
* After adding some naphtha. t After drying the stopper. $ After more naphtha. 
