ENEMIES OF PLANTS. 345 



" The Principal Insect Enemies of the Grape." Year-book, 

 1895. 



" Four Common Birds of the Farm." Year-book, 1895. 



"The Meadow-lark and Baltimore Oriole." Year-book, 1895. 



' Birds as Weed Destroyers." Year-book, 1898. 



" Fungus Diseases of Forest Trees." Year-book, 1900. 



" How Birds Affect the Orchard." Year-book, 1900. 



"Useful Birds and Harmful Birds." Year-book. 1897. 



"Audubon Societies in Relation to the Farmer." Year-book, 

 1902. 



" Manual for the Study of Insects." Comstock. 2. 



" Our Insect Friends and Foes." Craigin. 3. 



" Fungi and Fungicides." Weed. 4. 



" Bird Life." Chapman, i. 



" Our Friends, the Birds." Parker. 5. 



" Economic Entomology." Smith. 6. 



" Insects Injurious to Fruits." Saunders. 6. 



" Syrphus-flies." Bulletin No. 31, U. S. National Museum. 



