120 



THE NEXT GENERATION 



tank until " the atmosphere was saturated with the alcoholic 

 fumes." The place was then ready for the expected occupants. 

 After this, as he says, " the guinea pigs, three or four at a 

 time, are placed on the wire screen above the evaporating 

 alcohol, the tank is closed and the animals are allowed to 

 remain until they begin to show signs of intoxication, though 



they are never com- 

 pletely intoxicated. 

 They usually inhale 

 the fumes about an 

 hour." 



During all the rest 

 of the time, day and 

 night, the guinea pigs 

 breathed air entirely 

 unmixed with alcohol. 

 This was the treat- 

 ment they received 

 for six days in every 

 week, and it was 

 kept up for nineteen 

 months with what 

 results, we wonder. 



At first the fumes troubled them. It made their "eyes 

 water until tears ran over their faces." Dr. Stockard says : 

 " The majority of them sit quite motionless and sniff their 

 noses for a time and then become somewhat drowsy." A few, 

 however, "are excited by the treatment, and run about the 

 tank, and many often fight other animals savagely." 



But in the course of several weeks they were not even un- 

 comfortable in the tanks. They seemed to take the fumes as 

 a matter of course, appeared healthy, and even gained flesh. 



COPPER TANK USED IN DR. STOCKARD'S 

 ALCOHOL EXPERIMENTS 



Notice the light-colored sponges under the wire 



netting of the floor. Alcohol evaporated from the 



sponges into the tank 



