82 GOOD HEALTH 



The four dogs were treated exactly alike, except in 

 one important respect. Every day Dr. Hodge mixed a 

 little alcohol into the food that went to one of the ken- 

 nels. The dogs liked their food better without it, but 

 they had good appetites and ate whatever was given 

 them. On the other hand, not a drop of alcohol went to 

 the second kennel. This did not seem to make much 

 difference at first, for all four dogs grew equally fast, 

 and all looked equally strong and healthy. 



The dogs had to be named, and Dr. Hodge called one 

 pair Bum and Tipsy, because they took alcohol; the 

 other pair, in the other kennel, he named Nig and Topsy. 

 The first Topsy died soon after the experiment began, 

 and Topsy number two took her place. 



The next chapter will tell a little about the history of 

 these four dogs. 



QUESTIONS 



1. What happens to certain butterflies in South America? 



2. What do the birds do to the butterflies? 



3. What was Dr. Hodge asked to find out? 



4. Why did he decide to get the help of cats and dogs? 



5. What did he give to the kittens with their milk? 



6. How did the alcohol affect them? 



7. When were the four puppies born? 



8. How many puppies were put into each kennel? 



9. What were the names of the puppies? 



10. What food did they have? 



11. Which two dogs received a little alcohol with their food? 



