TRANSACTIONS OF THE SECTIONS. 



Thermometer Heat 

 rose from evolved. 



600 to 245° 

 67 to 286 

 to 268 

 to 263 

 to 238 

 to 222 

 to 207 

 to 198 

 to 188 



185° 



219 



208 



203 



178 



163 



148 



139 



129 



But when oil of vitriol previously mixed with water in atomic pro- 

 portions IS mixed with an atom of water, the heat evolved is much 

 less. This will appear from the following table. 



Acid. 



Water. 



Water. 



1 Atom + 1 Atom) + 1 Atom 



1 



(1 

 (1 

 (1 

 (1 

 (I 

 (1 

 (1 



+ 2 

 + 3 

 + 4 

 + 5 

 + 6 

 + 7 

 + 8 

 + 9 



) + l 



) +1 



) + l 



) +1 



) +1 



) + l 



) +1 



) +1 



3. Specijic heats of various atomic compounds of sulphuric acid and 

 water. 



This was determined by putting 24 cubic inches of the acids to be 

 tried in a flask, heating them 80° above the air of the room, and noting 

 the number of seconds which each took to cool 40°. The followinK 

 table shows the result. 



