6 



ventilation. No form of burner should be allowed to pour the prod- 

 ucts of combustion into the room. The water which is formed is 



harmless, but the carbon 

 dioxid, which is produced in 

 large proportions, will soon 

 vitiate the air of the room 

 and tend to produce drowsi- 

 ness, headache, and injury 

 to health. The common 

 methods of burning gas and 

 kerosene in a room without 

 ventilation are also objec- 

 tionable for the same reason. 

 Some form of ventilation by 

 means of which the products 



FIG. 2. Alcohol burner for roasting coffee. ,, , , 



or combustion in such cases 



could be removed from the room thru a chimney, or otherwise is 

 highly desirable. 



FIG. 3. A small alcohol stove for heating purposes. 



Stoves of many different kinds have been invented for burning 

 alcohol. There are stoves for heating natirons, soldering irons, 



269 



