ECONOMIC ZOOLOGY 517 



best growth and with the least injury to the partly grown in- 

 dividuals, just as it does on the farm or in the forest. 



The conservation of our natural resources also means that the 

 swamp lands, that cannot be drained and used more profitably, 

 and the shallow streams shall be made to produce edible frogs 

 or turtles instead of the other inedible amphibians and reptiles. 

 Wherever edible fish can grow pains will be taken to place them 

 and see that the conditions of their best life are given them. 



Various bureaus of the United States Government, as that 

 of Animal Industry, of Fish and Fisheries, of Entomology, and 

 the like ; the Agricultural Experiment Stations and the Natural 

 History Surveys of the various States ; the scientific men in the 

 universities and colleges, and many practical workers who are 

 in these fields in a commercial way, are studying the problems 

 suggested in this chapter and are trying to add to the vital 

 resources of the human race and its increasing population. It 

 is the duty of every American to get into a sympathetic attitude 

 to air this work. 



511. Topics for the Library. — i. Give a report of the United States Bureau of 

 Pish and Fisheries. How is it organized? What are its principal stations? 

 What work does it undertake to do? What are its chief pubhcations? 



2. Discuss similarly the Bureau of Animal Industry; the Bureau of Entomology; 

 the Biological Survey. 



3. Give an account of one of the inland fish hatcheries and its work. 



4. Why are the vegetable feeding animals preferred for food above the 

 carnivora? 



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



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

 ported on ten acres of ground go further in supporting human 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 experiments 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, becoming pests 

 in some degree. Give the habits of life of each so far as you can by study and 

 reference. 



11. Discuss with some care what is known of the history, the different varieties, 

 the use, 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? 



