408 ELEMENTARY ZOOLOGY. 



5. Why are woolen fabrics warmer than cotton or linen ? 



6. Will the vegetable food or the animal food that can be produced 

 and supported on ten acres of ground go further in supporting hu- 

 man life? Discuss carefully. 



7. Do you think the tendency will be to increase or to decrease 

 animal culture as population begins to press upon the resources of the 

 soil? Give the biological reasons fully. 



8. What are the chief arguments against vivisection and experi- 

 ments on living animals by investigators ? What the chief arguments 

 in favor of it? 



9. Discuss the various products of the hog utilized in the packing 

 houses. 



10. Discuss the animals that frequent human habitations, becom- 

 ing pests in some degree. Give the habits of life of each so far as 

 you can by study and reference. 



it. Discuss with some care what is known of the history, the 

 different varieties, the uses, etc., of some of the domestic animals, as 

 the dog, the horse, the fowl, the ox, and others. 



12. Discuss human slavery as a Zoological phenomenon. To 

 what is due the tendency to abolish it? 



