316 FUNDAMENTALS OF AGRICULTURE. 



birds and their protection is certainly of as much value 

 to the farmer as the studv of his insect foes. 



IMPROVISED BIRD BOXES. 



(Courtesy National Association of Audubon Societies.) 



EXERCISE. Are there any people that you know who are pro- 

 tecting the birds? State their methods. Has your state a game 

 law? 



NOTE FOR THE TEACHER. Take the class out to the fields and 

 point out the beneficial species of birds. Encourage the pupils to 

 build bird houses in their dooryards. Tin cans, old boxes, etc., will 

 make excellent nesting places. If one class becomes imbued with 

 the importance of bird protection a great deal of good will be ac- 

 complished for the farmers of your community. This subject can be 

 made very interesting by the proper presentation. 



REFERENCES FOR COLLATERAL READING. 



INSECTS : 



Yearbooks of the U. S. Dept. of Agriculture : 



1895 The principal insect enemies of the grape. 



1908 Information about spraying for orchard insects. 

 Farmers' Bulletins, Nos. : 



47 Insects affecting the cotton plant. 



99-296 Insect enemies of shade trees. 



120 Insects affecting tobacco. 



127 Important insecticides. 



132 Insect enemies of growing wheat. 



133 Clearing houses of flies. 



155 How insects affect health in rural districts. 



172 Scale insects and mites on citrus trees. 



244-261-309 The cattle tick. 



264 The brown-tail moth and how to control it. 



