134 
PROFESSOR KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
52. Chloride of Mercury, Hg Cl 2 . Well-dried crystals. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 9°*2. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• 
y- 
oc. 
sp. H. 
O 
o 
0 
o 
grms. 
grms. 
grms. 
grm. 
45*2 
11*5 
11*17 
8*86 
26*985 
6*07 
1*885 
0*431 
0*651 
0*0636 
44*3 
11*2 
10*90 
8*50 
26*99 
55 
2*105* 
55 
5J 
0*0657 
46*1 
11*5 
11*21 
8*72 
26*915 
55 
2*10f 
55 
0*0628 
Mean . . . 0*0640 
Chloride of Magnesium , Mg Cl 2 . Pieces of a beautiful preparation which had solidi- 
fied with crystalline structure after being melted. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 13°*2. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• y- 
X. 
sp. H. 
o 
o 
0 
o 
grms. 
grms. 
grms. 
grm. 
47*5 
14*8 
14*53 
12*13 
26*98 
2*235 
2*01 0*431 
0-651 
0*207 
46*4 
15*0 
14*72 
12*43 
26*98 
55 
55 55 
55 
0*201 
45*6 
15*1 
14*84 
12*63 
26*96 
55 
2*115* „ 
55 
0*175 
46*9 
15*3 
15*03 
12*73 
26*945 
55 
2*105f „ 
Mean 
55 
0*180 
0T91 
Chloride of Barium , Ba Cl 2 . Pieces of a specimen which was of a dead white colour 
after solidifying. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 14°*4. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/. 
y- 
X. 
sp. H. 
o 
o 
0 
0 
grms. 
grms. 
grm. 
grm. 
46*2 
16*2 
15*87 
13*64 
26*975 
6*795 
1*72 
0*431 
0*651 
0*0902 
48*0 
16*3 
16*02 
13*64 
26*96 
55 
55 
55 
„ 
0*0930 
47*1 
16*3 
16*03 
13*73 
26*945 
55 
55 
55 
„ 
0*0912 
46*4 
16*2 
15*94 
13*73 
26*97 
55 
l*705f 
55 
55 
0*0865 
Mean . . . 0*0902 
Crystallised Chloride of Barium, Ba Cl 2 + 2H 2 0. Crystals dried in vacuo. 
Experiments with Naphtha A. Glass 3. Temperature of the Air 16°T-16°*8. 
T. 
T'. 
t'. 
t. 
M. 
m. 
/• 
y- 
X . 
sp. H. 
o 
o 
0 
o 
grms. 
grms. 
grms. 
grm. 
45*5 
17*6 
17*34 
15*04 
26*975 
5*055 
2*14 
0*431 
0*453 
0*168 
47*1 
17*8 
17*50 
15*03 
26*955 
55 
55 
55 
55 
0*177 
47*0 
18*0 
17*74 
15*33 
26*975 
5J 
55 
55 
0*171 
46*2 
18*2 
17*94 
15*63 
26*965 
55 
2*125f 
55 
55 
0*169 
Mean . . . 0*171 
* After adding some more naphtha. (The naphtha was apparently sucked up by the crystals of chloride of 
mercury, hence more naphtha was added. The liquid formed a smeary border at the side of the glass, but 
there was no deliquescence of the crystals in the naphtha.) 
f After drying the stopper. 
