PEOFESSOB KOPP OX THE SPECIFIC HEAT OF SOLID BODIES. 
147 
63. Magnesian Spar, Ca^ Mgi C0 3 *. Specimens of magnesian spar from the Zillerthal. 
Experiments with Naphtha A. Glass 3. Temperature of the Air 15°T-15°*9. 
T. 
T. 
f. 
t. 
IT. 
m, . 
/• y. 
X. 
sp. H. 
c 
0 
o 
grms. 
grms. 
grm. 
grm. 
48*9 
17*7 
17*43 
14*52 
26*96 
6*195 
1*76 0*431 
0*453 
0*210 
48*3 
17*9 
17*60 
14*77 
26*96 
55 
55 55 
55 
0*210 
47*0 
17*9 
17*64 
15*02 
26*995 
1*745 f ,, 
0*198 
Mean . . . 0*206 
Spathic Iron, -F Mn^ Mg^ C0 3 $ . Cleavage pieces of reddish crystals from Bieber, 
Hesse Cassel. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 14°*6-14°*4. 
T. 
T. 
t'. 
t. 
11 . 
m . 
/• y- 
X . 
sp. H. 
o 
O 
0 
o 
grms. 
gnus. 
grm. 
grm. 
47*7 
17*0 
16*74 
13*92 
26*98 
6*56 
1*78 0*431 
0*651 
0*162 
45*6 
16*9 
16*63 
13*94 
26*93 
„ 
55 55 
55 
0*169 
46*1 
16*9 
16*55 
13*83 
26*965 
1*765 f „ 
0*168 
Mean . . . 0*166 
64. Zircon, ZrSi0 4 , or Ir h SL 0.,. Hyacinth crystals from Ceylon. 
Experiments with Naphtha A. Glass 1. Temperature of the Air 18 c *4-19°*8. 
T. 
T- 
t\ 
t. 
ll. 
rn. 
/• y- 
sp. H. 
o 
o 
o 
o 
grms. 
grms. 
grm. 
grm. 
51*2 
20*6 
20*33 
17*46 
26*945 
9*69 
1*32 0*431 
0*651 0T35 
50*2 
20*8 
20*54 
17*83 
26*955 
55 
55 55 
„ 0*131 
51*0 
21*0 
20*74 
18*01 
26*97 
55 55 
„ 0*127 
52*0 
21*2 
20*87 
18*03 
26*96 
55 
55 55 
„ 0*131 
51*1 
21*3 
21*03 
18*24 
26*93 
55 
l*30f „ 
„ 0*135 
Mean . . . 0*132 
* The results of my analysis of this spar (Ann. der Chem. nnd Pharm. Ixxxi. 50) are, compared with the 
numbers required by the above formula, as follows : — 
CaO CO s . ITgOCO,. FeO CO/. Total. 
Found 54-3 42-2 37 100-2 
Calculated .... 54-3 45-7 „ 100-0 
t After drying the stopper. 
X The numbers found in my analysis of this spathic iron (Ann. der Chem. nnd Pharm. Ixxxi. 51) are given 
below, compared with those calculated on the above formula. 
FeO C0 2 . HhO C0 2 . CaOCO,. Mg0C0 2 . X b . Total. 
Found 73-7 19-0 0-9 6-6 0-7 100-9 
Calculated .... 74-7 18-6 ,, 6-7 „ 100-0 
“With some HnO C0 3 . 
b Insoluble in aqua regia. 
