Improved Form of Coal- Calorimeter. 



45a 



the instrument at the tap (e), and flows down the tube (/) to 

 the small "rose" nozzle (</). After taking part in the com- 

 bustion of the coal, which is placed at (h), the gas leaves the 



1%. 2. 



chamber by the openings (i i), and flows down the tubes (;' /) 

 to the ball-valve (k). Lifting this valve, the gas enters the 

 small chamber (/), and escapes into the water of the calori- 

 meter by the small boles (m) (see also fig. 4). This continues 

 until the combustion is finished ; then the supply of oxygen 



