280 ON THE COMBINATIONS OF 
Oil of Weight of Thermometer { Heat 
Vitriol. Water. | Acid. Water. rose from Evolved. 
Grains.| Grains. 
1 atom +1 atom/1000] 183.6/60° to 245°) 185% 
Sete Ee LOO mad Oiled |Olee LONeob.,|. ale 
“« 43 “ 41000} 550.9/60 to 268 | 208 
“td 6 611000} 734.6160 to 263 | 203 
«45 (1000) 918.3/60. to. 238 | 178 
« +6 © {1000/1102 {59 to 222 | 163 
“« +7 © 11000/1285.7/59 to 207 | 148 
“« 48 © |1000/1469.3/59 to 198 | 139 
« 649 * {1000/1653 [59 to 188 | 129 
He says that when oil of vitriol previously 
mixed with water in atomic proportions is mixed 
with an atom of water, the heat evolved is much 
less ; as appears from his following table: 
ST ee Thermometer THeat 
Acid. Water. Water. rose from Evolved. 
Latom. +). 1 atom | + i] atom |60° to 245°] 185° 
Pegs Hy Sane oe Seapine Litem cysyreg rays Wo: 70 
116 iy le STS LO gE + Loeor64 te 110 46 
1G + 4 « ee eS 160. toy 9D ab 
hey = ein 5 yan je bt lGes: ton co 13 
hy SMG) ic ic Tete mIGSi itor: 722 9 
ty «6 + T « eR) eee Sapa aimee (8) a 
i hah + 8 « cee a Gt tooo 6 
L pret +. 9 « ae tlie “oes 163M tor 6a 4 
He then goes on to show the specific heats 
of various atomic compounds of sulphuric acid 
and water; which he determined by putting 24 
cubic inches of the acids to be tried into a flask, 
heating them 80° above the air of the room, and 
