422 



USEFUL BIRDS. 



The Destruction of Birds by the Elements in 1903-04. E. H. Forbush. 



Ibid., 1903, pp. 457-503. 

 The Decrease of Certain Birds, and its Causes, with Suggestions for 



Bird Protection. E. H. Forbush. Ibid., 1904, pp. 429-543. 



Nature Leaflets. 



No. 12. Winter Birds at the Farm. E. H. Forbush. 1902. 

 No. 14. Owl Friends. E. II. Forbush. 1903. 

 No. 15. Bird Houses. E. H. Forbush. 1903. 

 No. 16. Our Friend the Chickadee. E. H. Forbush. 1903. 

 No. 22. Hints for Out-door Bird Study. E. H. Forbush. I. How to 



identify Birds. 1904. 



No. 23. Ibid. II. How to find Birds. 1904. 

 No. 24. Ibid. III. How to approach Birds. 1904. 

 No. 25. Ibid. IV. How to attract Birds. 1904. 



