A YEAR IN SCIENCE 



37 



increased this number of degrees per minute? Then 

 how many calories of heat was your flame giving off 

 per minute? 



Tabulate results as follows : 



B. With the gas adjustment the same throughout, 

 prepare flasks as follows : 



One containing 100 c.c. water. 

 200 c.c. " 

 300 c.c. " 

 400 c.c. " 

 500 c.c. " 



The water in each flask should be the same tempera- 

 ture (room temp.) at the beginning of the experiment. 

 With the bulb of the thermometer in the water in the 

 flask, heat each until the water begins to boil. Note 

 carefully in each instance the length of time necessary 



