PEOFESSOE KOPP ON THE SPECIFIC HEAT OF SOLID BODIES. 
187 
For the oxides named in § 85, SO M 111 
„ binoxide of tin, Sn 0 2 , § 85 M 13-8 
SumforRR0 3 . . . 24-9 
„ sesquioxide of iron, Fe 2 0 3 , §85 M 26*8 
„ chromate of potass, K 2 €r0 4 , § 87 M 36 '4 
„ the acids, R0 3 , in § 85 (Regnault) 18-8 
Sum for K 2 €rRG 7 . . . 55*2 
„ acid chromate of potass, K 2 €r 2 0 7 , § 87 M 55 - 3 
„ binoxide of tin, Sn 3 0 6 , § 85 M 41*4 
„ base, R 2 0 2 , mean of determinations, § 85 M 22*2 
SumforSgOg . . . 63*6 
„ arseniate of lead, Pb 3 As 2 0 8 , § 88 65 - 4 
To this belongs the fact that water is contained in solid compounds with the atomic 
heat of ice*. The different determinations of the specific heat of this substance (§ 85) 
gave the atomic heat for greater distances from 0°, 8 - 6, and for temperatures nearer 0°, 9T 
to 9*2. The atomic heats have been found 
For BaCl 2 +2H 2 0, §84 41*7 ForH 2 0. 
„ the chlorides, R Cl 2 , § 84 M 18 - 5 
Remains for 2 H 2 0 . . . 23-2 11-6 
,, OaCl 2 +6 H 2 O, § 84 75*6 
„ the chlorides, R Cl 2 , § 84 M 18-5 
Remains for 6 H 2 O . . . 57T 9-5 
„ Brucite, Mg G-j-H 2 0, § 85 18-1 
„ the oxides, R O, § 85 M 11 1 
Remains for H 2 O . . . . 7‘0 7"0 
„ dioptase, €uSi0 3 +H 2 0, § 86 28-7 
„ the silicates, R Si 0 3 , § 86 M 205 
Remains for H 2 O . . . . 8 - 2 8-2 
„ Na 2 B 4 O 7 +10H 2 O, § 87 146-9 
„ Na 2 B 4 9 7 , §87 47T 
Remains for 10 H 2 O . . . 99-8 10-0 
» gypsum, €aS0 4 +2H 2 0, § 87 M 45-8 
„ the sulphates, RS0 4 , § 87 M 26-1 
Remains for 2 H 2 O . . . 19 - 7 9-9 
* Even before Person (compare § 14) L. Gmelin bad speculated (Handbucb der Chemie, [4] Aufl. vol. i. 
p. 223) whether from the atomic heats of anhydrous sulphate of lime and of ice that of gypsum could be calcu- 
lated. The results of calculation deviated considerably from the atomic heat as deduced from the observed specific 
heat of gypsum ; the specific heat, and therewith the atomic heat of ice, were at that time incorrectly known. 
