A MAGGOT TRAP IIS^ PRACTICAL USE. 15 



is laro^e. Finally, it is suggested that tlie same conditions which 

 render the trap most effective are the ones which tend to preserve 

 the value of the manure. 



REFERENCES TO LITERATURE. 



Beal, W. H. 



1904. Barnyard Manure. (A revision of Farmers' Bulletin No. 21.) IT. S. Dept. 

 Agr., Farmers' Bui. 192, 32 p., 4 figs. 

 Brown, P. E. 



1913. Farm }*lanures. Agr. Expt. Sta. Iowa State Col. Agr. and Mechanic Arts, 



Circ. 9, 16 p., illus., April. 

 Deherain, p. p., and Dtjpont, C. 



1900. Sur la composition des gaz confines dans le fumier de ferme. In Ann. 



Agron.. Paris, t. 26, p. 273-294. 

 Hewitt, C. G. 



1914. Further observations on the breeding habits and control of the house 



fly, Musca domestica. In Jour. Econ. Ent., v. 7, no. 3, p. 281-293, 

 figs. 20-21, June. 

 Howard, L. 0. 



1911. The House Fly — Disease Carrier. New York. 

 Hutchison, R. H. 



1914. The migrator^' habit of house-fly larvae as indicating a favorable 

 remedial measure. An account of progress. U. S. Dept. Agr., Bui. 

 14, lip., Feb. 28. 

 Levy, E. C, and Ttjck, W. T. 



1913. The maggot trap — A new weapon in our warfare against the typhoid 

 fly. In Amer. Jour. Pub. Health, v. 3, no. 7. p. 657-660, illus., July. 



BiNOELHANN, MaX. 



1913. Am^nagement des Fumiers et des Purins, 187 p., 103 figs. Paris. (Nouv- 

 elle BibUotheque du Cultivateiu:.) 

 Thorne, C. E. 



1913. Farm Manures, 242 p., illus. New York and London. 



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