116 
PROFESSOR KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
II. — Experiments with Naphtha B. Glass 3. Temperature of the Air 19°‘4-19 o, 0. 
T. 
T'. 
t'. 
t. 
M. 
TO. 
/• y- 
X. 
sp. H. 
grms. 
grms. 
grm. 
grm. 
55-0 
21-9 
21-62 
18-06 
26-96 
19-725 
1-56 0-419 
0-453 
0-0909 
54-1 
21-4 
21T1 
17-60 
26-965 
55 
55 55 
55 
0-0906 
53-6 
21-2 
20-86 
17-36 
26-99 
55 
55 55 
55 
0-0917 
54-2 
21-3 
20-96 
17-44 
26-98 
55 55 
55 
0-0902 
51-7 
21-2 
20-85 
17-55 
26-965 
” 
1-545 * „ 
Mean 
55 
0-0921 
0-0911 
hi.—: 
Experiments with Water. Glass 1. Temperature of the Air 18 ! 
o* 
OO 
i — 1 
1 
T. 
T'. 
t'. 
t. 
M. 
TO. 
/• y- 
OB. 
sp. H. 
0 
O 
0 
o 
grms. 
grms. 
grm. 
grm. 
49-7 
20-8 
20-50 
16-17 
26-95 
18-26 
1-625 1-000 
0-651 
0-0965 
50-0 
20-6 
20-32 
15-93 
26-96 
55 
55 
0-0958 
49-5 
20-8 
20-50 
16-22 
26-93 
55 
„ 
0-0953 
47-9 
20-9 
20-62 
16-64 
26-945 
55 
1-615 * „ 
Mean 
55 
0-0934 
0-0953 
According to these determinations, the mean of the average results 0-0925, 0-0911, 
0-0953, the number 0-093 represents the specific heat of copper between 20° and 50°. 
40. Lead : reduced from sulphate of lead and cast in small bars. 
I. — Experiments with Naphtha A. Glass 1. Temperature of the Air 18°-9-18°-8. 
T. 
T'. 
t'. 
t. 
M. 
TO. 
/• 
y- 
X. 
sp. H. 
O 
O 
o 
o 
grms. 
grms. 
grm. 
grm. 
50-5 
20-6 
20-33 
18-23 
26-995 
19-93 
1-465 
0-431 
0-651 
0-0308 
50-5 
20-7 
20-43 
18-35 
26-975 
55 
55 
55 
„ 
0-0302 
50-9 
20-7 
20-44 
18-35 
26-965 
55 
55 
55 
55 
0-0293 
50-5 
20-6 
20-32 
18-24 
26-94 
55 
1-445 
* 
55 
0-0302 
Mean , . . 0-0301 
II. — Experiments with Water. Glass 1. Temperature of the Air 15°-5-15 0, 9, 
T. 
T'. 
t'. 
t. 
M. 
TO. 
/• 
y- 
X . 
sp. H. 
46-0 
o 
17-5 
17-21 
14-02 
grms. 
26-96 
grms. 
24-845 
grm. 
1-56 
1-000 
grm. 
0-651 
0-0325 
45-3 
17-6 
17-32 
14-23 
26-985 
55 
55 
55 
0-0322 
45-9 
17-7 
17-42 
14-25 
26-945 
55 
55 
55 
55 
0-0329 
46-1 
17-9 
17-61 
14-43 
26-985 
„ 
1-55 * 
55 
55 
0-0339 
Mean . . . 0-0329 
The mean of the averages of both series of experiments, 0-0301 and 0-0329, gives for 
the specific heat of lead between 19° and 48° the number 0-0315 
* After drying the stopper, 
