204 MR HAYCRAFT on the Specific Heat of the Gases. 



Experiments on Oxygen Gas, 



No. 1. 



Having filled the part A with Oxyen Gas procured from 

 the Black Oxide of Manganese, and every arrangement being 

 made as before, the following results were observed : 



At the beginning 

 of experiment, 

 After 5 minutes, 

 After 10 minutes, 

 After 15 minutes, 

 After 20 minutes, 



Temperature of 

 Calorimeter A, 

 containing 

 Oxygen Gas, 



o 



67- 2 - 



U < 2 



71 



Of Calorimeter B, 

 containing At- 

 mospheric Air. 



1 A. 

 "20 



70 



' U 2 



Inferred capacities. 



10000 



10000 



10019 



9982 



No. 2. 



At the beginning ~) 

 of experiment, ) 

 In 10 minutes, 

 In 15 minutes, 

 In 20 minutes, 



A 



56.6 



66.16 

 71 



74-*- 



'^2 



B 



56.4 



66.14 

 70.18 



10000 



10000 

 10000 

 10000 



The temperature of the Gases entering the calorimeters were 

 equal, being each 137. The Gas contained in the gasometer 

 before the apparatus was filled, indicated 98 per cent, of Oxy- 

 gen, by the test of sulphuret of lime. After the experiment was 

 concluded, that contained in the apparatus indicated 91 per 

 cent- 



