18 Prof. T. S. Humpidge. 



Expt. 6.. W= 75-09, T = 99°*26, = 14°*50, t = 11°*62, 

 .-. c 6 = 0*4174. 



Expt, 7.. W= 76-24, T = 99°-50, = 15°-09, t = 12°-28, 

 .*. c 7 = 0-4210. 



Mean : c^ 3 = few = 0*4179, 

 and & 10 = 0'4146. 



(ii.) By Andrews' Calorifer. 



Equivalent of calorimeter and thermometers 10'33, weight of 



water =262" 34. The mean of five experiments gave 0=8°*436, 

 *=7-016°, 



whence equivalent of calorifer = 



= 272-67 x 1-42 = 38719 1-0023 

 = 386-20 



In two series of experiments, using turpentine instead of water, the 

 following results were obtained : — 



Series i. — Weight of turpentine = 229*26, 



6 — 12°-298, t = 8°-594 (5 experiments) 

 .'. Jc 10 . 5 = 0-4107. 



Series ii. — Weight of turpentine =229*26, 



6 = 12°*480, t - 8°*790 (4 experiments) 

 .-. h 10 . 5 = 0*4115, 

 whence k i0 = 0*4105. 



(iii.) By Electrical Method. 



Mean of three experiments gave 



&16-2 = 0*4180, compared with water at 14°*2, 

 whence 7c 10 = 0*4085. 



The general mean of the three sets of determinations is 

 h 10 = 0*4112, 



which was adopted, with a correction for the temperature, in calcu- 

 lating the specific heat of glucinum in the following experiments : — 



II. Specific Heat of Glucinum. 



(i.) In Turpentine. 



Weight of substance =0*745, weight of platinum casing= 1*527, 

 water equivalent of calorimeter, &c.-*=2*83. 



