A GRADED COURSE OF NATURE-STUDY 489 



246 "Common Birds." Agricultural Year-books. Also see 

 Chapter IX.) Study of the introduction and spread of the 

 English sparrow and the results. Methods of extermi- 

 nation. (5, 120.) 



More detailed study of migration; causes, destinations, 

 mode of travel, routes of travel. Special study of the robin, 

 wild duck, bobolink, humming-bird. Observe migration and 

 feeding habits of the birds. Discussion of winter residents. 

 (100, 108, 33, 34, 96, 64, 21 for migration.) 



Insects: Have pupils make a collection of insects.* 

 (See Chapter XIII.) Let the insects be neatly mounted and 

 classified by orders. Groups might be set at work collecting 

 and mounting sets of insects that eat vegetables, that injure 

 shade trees, that are beneficial. Butterfly collection. Set 

 showing protective coloration. Life history sets. A silk- 

 moth chart. These to be kept by the school. Begin early in 

 fall. (143, 136, 132, 33, 34, 130, 126, 148, 148a;) 



General study of the food of insects. Simple study of the 

 adaptation of the mouth organs for this food. (148, 136, 

 132, 231, 241, 222, 148a.) 



Amount of damage done by the codling moth, by the scale 

 insects, by chinch bugs, locusts, cotton-boll weevil. (Look 

 up in the Year-books of the Department of Agriculture, 

 also in magazines, in 148, 148a, 136, 130, etc.) Story of the 

 locust plague in United States. Read descriptions from the 

 Bible about locusts. Insecticides, how they act, how pre- 

 pared and applied. (148, 231, 221, 241, 148a, 246 "In- 

 secticides." Also seed catalogue.) 



Value of bee culture. (133, 144, 246 "Beekeeping," 148a, 

 148.) Importance of the silk industry. (47, 312, 317, 316, 

 320, 246 "Silkworm," 148, 148a.) 



