3G2 APPENDIX IV. 



1898. Sanderson, E. Dwight. The Economic Value of the 

 White-bellied Nuthatch and Black-capped Chickadee. 

 The Auk, vol. xv., pages 144-155. 



Record of food of twenty-three nuthatches in winter and eleven 

 in early spring, and of nineteen chickadees in winter and nine in 

 spring. 



1898. Weed, Clarence Moores. The Causes of the Decrease 

 of Birds. Granite Monthly, vol. xxv., pages 211-215. 



An illustrated discussion of the subject. 



1898. Weed, Clarence Moores. Our Largest Standing Army, 

 the Birds. Granite Monthly, vol. xxv., pages 325-331. 



Discussion of regulative action of birds. 



1898. Weed, Clarence Moores. The Insects Eaten by Birds. 

 Agricultural Education, vol. i., pages 4-7, 51-53. 



Illustrated discussion of the insects most commonly fed upon 

 by birds. 



1898. Weed, Clarence Moores. The Feeding Habits of the 

 Chipping Sparrow. New Hampshire College Agricultural 

 Experiment Station, Bulletin 55. July, 1898. 



An illustrated account of a day's work by a pair of chipping 

 sparrows feeding three young. Nearly two hundred visits to the 

 nest were made. 



1898. Williamson, E. B. The Economic Importance of some 

 Common Birds. Journal of Columbus Horticultural So- 

 ciety, vol. xiii., pages 33-44. 



Touches upon the economic importance of many species of 

 North American birds, with notes on feeding habits of some of 

 them in Ohio. 



1899. Beal, E. E. L. Economic Relations of Birds and their 

 Food. Proceedings Twenty-fourth Annual Meeting New 

 Jersey State Horticultural Society, 1899. 



A general discussion of the subject. 



