PROFESSOR KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
165 
79. Tartaric Acid , 0 4 H fl O fi . Dried fragments of larger crystals. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 20°-6. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• 
y- 
X. 
sp. H. 
Q 
0 
o 
0 
grins. 
grms. 
grm. 
grm. 
51-3 
22-4 
22-12 
19-74 
26-985 
3-16 
1-53 
0-431 
0-651 
0-289 
50-5 
22-5 
22-23 
19-94 
26-96 
99 
„ 
„ 
0-283 
50-7 
22-6 
22-32 
20-03 
26-97 
99 
1-52* 
yy 
it 
0-282 
Mean . . . 0-285 
Small crystals dried at 100°. 
Experiments with Naphtha B. Glass 3. Temperature of the Air 18 o, 0-18°-4. 
T. 
6 
T'. 
o 
t'. 
o 
t. 
0 
M. 
grms. 
m. 
grms. 
/• 
grm. 
y- 
X. 
grm. 
sp. H. 
51-1 
20-0 
19-68 
17-15 
26-97 
3-57 
1-69 
0-419 
0-453 
0-289 
50-9 
20-0 
19-72 
17-20 
26-99 
99 
99 
99 
99 
0-291 
51-3 
20-0 
19-73 
17-18 
26-97 
99 
„ 
99 
„ 
0-290 
50-5 
19-9 
19-63 
17T3 
26-97 
99 
1-68* 
99 
Mean 
99. 
0-293 
0-291 
The average of the means of both series of experiments gives 0-288 as the specific 
heat of crystallized tartaric acid between 21° and 51°. 
Crystallized Bacemic Acid , € 4 H e 0 6 +H 2 0. Fragments of air-dried transparent 
crystals, which remained clear in the experiments made with them. 
Experiments with Naphtha B. Glass 1. Temperature of the Air 16°'4-16°-9. 
T. 
T', 
t'. 
t. 
M. 
m. 
/• 
y- 
X . 
sp. H. 
o 
o 
0 
o 
grms. 
grms. 
grm. 
grm. 
50-5 
18-6 
18-33 
15-63 
26-945 
3-17 
1-495 
0-419 
0-651 
0-317 
50-3 
18-6 
18-33 
15-64 
26-965 
tt 
99 
99 
99 
0-319 
50-6 
18-7 
18-43 
15-73 
26-965 
„ 
99 
99 
99 
0-317 
50-0 
18-8 
18-52 
15-86 
26-975 
„ 
1-48* 
„ 
99 
0-324 
Mean 
0-319 
Succinic 
Acid, € 4 H 6 0 4 . 
Small 
crystals dried at 100°. 
Experiments with Naphtha B. 
Glass 1. 
Temperature of the Air 17° 
•3-17°-: 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• 
y- 
X . 
sp. H. 
o 
O 
0 
0 
grms. 
grms. 
grm. 
grm. 
51-4 
19-4 
19-05 
16-54 
26-985 
2-455 
1-64 
0-419 
0-651 
0-317 
50-5 
19-4 
19-13 
16-70 
26-95 
99 
99 
99 
0-313 
50-8 
19-5 
19-24 
16-80 
26-965 
99 
99 
0-311 
50-9- 
19-6 
19-26 
16-82 
26-935 
99 
1-625 
99 
0-313 
Mean . . 0-313 
After drying the stopper. 
