156 THE ECONOMIC IMPORTANCE OF ANIMALS 



1. To gardens. — Report on cutworm, corn worm, potato 

 beetle, squash bug. 



2. To crops. — Boll weevil, chinch bug, plant lice, Hessian fly. 



3. To fruit and forest trees. — Codling moth, gypsy moth, 



tussock moth, hickory 

 borer, maple borer, 

 scale insect. 



4. To stored food. 

 — Weevils, roach, ant. 



5. To clothes, etc. 

 — Clothes moth, roach. 



6. As disease carriers. — Flies, mosquitoes, fleas, bedbugs. 



Report, using the above sources of information, on specific 

 ways of combating one pest from each of the above groups. 



Conclusion. — What specific harm is done by the above-named 

 insects and how would you go to work to prevent this harm ? 



JProbletn Vi2 : To hnow some forjns of animal life that cause 

 disease. 



Materials. — Use your Civic Biology, Chap. XV, or any 

 other source of infor- 

 mation. 



Observations. — 

 Fill in the accompany- 

 ing chart, giving infor- 

 mation with refer- 

 ence to disease-caus- 

 ing animals, especially 

 hookworm, tricliina, 

 and tapeworm. 



Conclusion. — 1. 

 What animals cause 

 disease and what dis- 

 eases do they cause? 



2. How would you 

 attempt to cure anj^ three of these diseases? 



3 . How would you attempt to prevent any three of these diseases ? 



