An introduction to agriculture . 64, 15 cents. 150 AN INTIIODUCTION TO AGRICULTUKE Powdery Dry-rot of Potatoes, B. P. I. , 5 Weed Problem in Atnerican Agriculture, Year Book,Sep., 732, 5 cents. Farmers Bulletins. Preventing Wheat and Oat Smut, F. B. 250, 507. Potalo Tuber Diseases, F. B. 544. Collecling and Preserving Insects, F. B. 606. The True Army Worm, F. B. 731. The Boll Weevil, F. B. 512. The Chinch Bug, F. B. 657. San Jose Scale, F. B. 650. Oyster Shell and Scurry Scale, F. B. 723. Gypsy and Brown Tail Molhs, F. B. 564. The Hessian Fly, F. B. 640. Wireworms, F. B. 725
An introduction to agriculture . 64, 15 cents. 150 AN INTIIODUCTION TO AGRICULTUKE Powdery Dry-rot of Potatoes, B. P. I. , 5 Weed Problem in Atnerican Agriculture, Year Book,Sep., 732, 5 cents. Farmers Bulletins. Preventing Wheat and Oat Smut, F. B. 250, 507. Potalo Tuber Diseases, F. B. 544. Collecling and Preserving Insects, F. B. 606. The True Army Worm, F. B. 731. The Boll Weevil, F. B. 512. The Chinch Bug, F. B. 657. San Jose Scale, F. B. 650. Oyster Shell and Scurry Scale, F. B. 723. Gypsy and Brown Tail Molhs, F. B. 564. The Hessian Fly, F. B. 640. Wireworms, F. B. 725. Common White Grubs, F. B. 543. House Ants, F. B. 740. The Common Cabbage Worms. F. B. 766. Grasshopper Control, F. B. 747. Cereal Smuts and Seed Disinfection, F. B. 939, CHAPTER XV THE FARMERS FRIENDS: BIRDS, TOADS, BEES 143. Birds and Their Food.—While a large partof the farmers work consists in fighting insects, weeds,and other injurious things, he has some valuable friendswho work with and for him. Probably the most valu-. ROBIN able are the birds. They aid the farmer by eating in-sects and seeds of weeds. Young birds grow rapidly and require a great amountof food. ]\rany of them are fed mostly on insects. Ithas been estimated that a pair of sparrows will carrymore than three thousand caterpillars to their nest in a 151 152 AN INTEODUCTIO^^ TO AGKICULTUKE week. A young robin, kept in captivity, was fed sixtyearthworms a day, and an observer claims that a pair ofyoung European jays were fed a half million cater-pillars in a single season. 144. Useful Birds.— Birds that help the farmermay be divided into three groups. First, those that live
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
