STIMULANTS AND NARCOTIC'S 



69 



a moderate amount of alcohol ; it was not enough, however, 

 to cause any evidence of intoxication. The other two 

 spaniels, " Nig " and " Topsy," received no alcohol. 



88. Effect of a moderate amount of alcohol on activity. — 



For over five years these dogs were studied, and important 



Topsy 



Fig. 23. — The appearance of the four spaniels six months after the experi- 

 ments were begun. (" Physiological Aspects of the Liquor Problem," by 

 permission of Dr. Hodge and of Houghton, Mifflin & Co.) 



facts were learned as to the general effect of alcohol on 

 physiological processes. Early in his observations it became 

 evident to Professor Hodge that the dogs that were receiving 

 the alcohol were far less playful than were those that had no 

 alcohol in their food. To measure the comparative activity 

 of the different animals, he attached to the collar of each dog 

 a Waterbury watch adjusted in such a way that it would tick 



