168 
PROFESSOR KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
and some of the chemical compounds by Neumann have been determined by the method 
of cooling. Where it is not otherwise stated in reference to the temperature, all deter- 
minations refer to temperatures between 0° and 100°. Where the determination has 
been made beyond these limits, or where a more accurate statement of temperature is 
important, it is noticed. Where the same substance has been repeatedly investigated 
by the same observer, the result obtained for the purer preparation, and in general the 
most certain result, is taken. 
In the following the chemical formula is given for each substance, the symbols 
used both here and subsequently, when not otherwise mentioned, refer to the numbers 
given in the last column of § 2 as the most recent assumptions for the atomic weights, 
the corresponding atomic weight, and the atomic heat, viz. the product of the specific 
heat and the 
atomic weight. 
82. Elements and Alloys. 
Atomic 
Specific 
weight. 
heat. 
0-0557 
Ag . . . 
00 
o 
rH 
0-0570 
0-0560 
A-l . . . . 
. . 27 4 | 
0-2143 
0-202 
As . . . 
. . 75 
0-0814 
Au . . . 
. . 197 
''Amorphous . . 
0-0298 
0-0324 
0-254 
B . . . . 
. . 10-9 ' 
) Graphitoidal 
0-235 
| Crystalline .... 
0-225- 
0-230 
-0-262 
( 
1 
0-0288 
Bi . . . . 
. . 210 < 
| * * ‘ ‘ ’ ’ ’ 
0-0308 
0-0305 
Br . . 
. . 80 
Between —78° and 20° 
0-0843 
'’Wood charcoal . 
0-241 
Gas carbon .... 
99 .... 
0-204 
0-185 
C . . . . 
. . 12 - 
Natural graphite 
99 • 
0-202 
0-174 
Iron graphite . . . 
0-197 
99 ... 
0-166 
^Diamond 
0-1469 
€d . . . 
. . 112 < 
f 
0-0567 
0-0542 
Go' . . . 
. . . 58-8 
| 
r 
0-1067 
0-0949 
Gu 
. . 63*4 - 
) Hammered .... 
0-0935 
1 Heated 
f 
0-0952 
0-0930 
0-1100 
I 
¥e 
. . . 56 • 
:::::::: 
0-1138 
0-112 
Hg . . 
. . 200 . 
Between —78° and —40° 
0-0319 
Atomic 
heat. 
D. P. 
6-02 
R. 
6-16 
Kp. 
6-05 
R. 
5-87 
Kp. 
5-53 
R. 
6-11 
D. P. 
5-88 
R. 
6-38 
Kp. 
2-77 
R. 
2-56 
Kp. 
2-51 
R. 2-45 
-2-86 
D. P. 
6-05 
R. 
6-47 
Kp. 
6-41 
R. 
6-74 
R. 
2-89 
R. 
2-45 
Kp. 
2-22 
R. 
2-42 
Kp. 
2-09 
R. 
2-36 
Kp. 
1-99 
R. 
1-76 
R. 
6-35 
Kp. 
6-07 
R. 
6-27 
1). P. 
6-02 
R. 
5-93 
R. 
6-04 
Kp. 
5-90 
D.P. 
6-16 
R. 
6-37 
Kp. 
6-27 
R. 
6-38 
