PROFESSOR KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
117 
Zinc : purified, cast in small bars. 
I. — Experiments with Naphtha A. Glass 3. Temperature of the Air 17 0, 8-18°-9. 
,T. 
T'., 
t'. 
o 
t. 
o 
M. 
grms. 
m. 
grms. 
/• 
grm. 
y • 
X. 
grm. 
sp. H. 
51-5 
20-5 
20-22 
17*23 
26-995 
15-555 
1-745 
0-431 
0-453 
0-0899 
51-1 
20-3 
19-95 
16-96 
26-985 
„ 
55 
55 
55 
0-0909 
51-7 
20-6 
20-25 
17-24 
26-99 
55 
55 
55 
55 
0-0905 
50-9 
20-5 
20-23 
17-25 
26-945 
55 
1-72* 
55 
Mean 
” 
0-0930 
0-0911 
II. — Experiments with Water. Glass 1. Temperature of the Air 16 o, 0-16°-5. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• y • 
X . 
sp. H. 
o 
o 
o 
o 
grms. 
grms. 
grm. 
grm. 
43-0 
17-7 
17-43 
13-82 
26-98 
14-25 
1-855 1-000 
0-651 
0-0943 
43-1 
18T 
17-84 
14-26 
26-965 
55 
55 55 
„ 
0-0951 
42-7 
18-1 
17-82 
14-32 
26-96 
55 
55 55 
55 
0-0933 
42-7 
18-4 
18-05 
14-54 
26-99 
55 
55 55 
„ 
0-0977 
42-9 
18-5 
18-23 
14-74 
26-97 
1-845 * „ 
55 
0-0956 
Mean . . . 0-0952 
These determinations give 0-0932 as the mean of the means of the two series of 
determinations for the specific heat of zinc between 19° and 47°. 
Cadmium : cast in small bars. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 18°-9-19°T. 
T. 
T'. 
t[. 
t. 
M. 
m. 
/• 
2/* 
X . 
sp. H. 
o 
O 
o 
0 
grms. 
grms. 
grm. 
grm. 
53-7 
21-0 
20-72 
18-24 
26-955 
13-335 
1-555 
0-431 
0-651 
0-0542 
51-6 
20-9 
20-56 
18-23 
26-97 
55 
55 
55 
55 
0-0544 
51-9 
20-8 
20-47 
18-12 
26-98 
55 
„ 
55 
0-0538 
52-3 
20-8 
20-52 
18-14 
26-975 
„ 
1-535* 
55 
55 
0-0544 
Mean . . . 0-0542 
Magnesium : metallic globules and masses comminutedf . 
Experiments with Naphtha A. Glass 1. Temperature of the Air 18 0, 6-19°1. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• 
y- 
X. 
sp. H. 
o 
O 
o 
o 
grms. 
grms. 
grm. 
grm. 
53-3 
20-6 
20-32 
17-74 
26-995 
3-485 
1-42 
0-431 
0-651 
0-249 
51-8 
20-6 
20-26 
17-83 
26-97 
55 
0-240 
51-0 
20-6 
20-33 
17-94 
26-99 
,, 
5} 
0-247 
51-6 
21-0 
20-72 
18-33 
26-96 
„ 
1-40 
* 
55 
„ 
0-244 
Mean . . . 0-245 
* After drying the stopper. 
t “ The magnesium was prepared hy the methods of Deville and Caron, and Wohler. The reguline masses 
were not remelted, hut treated with dilute hydrochloric acid, then washed with water and dried at a gentle 
temperature.” — Engelbach. 
