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Beal, F. E. L. 1897. Some Common Birds in their Relations to Agriculture. Farmer's 



Bull. U. S. Dept. Agric.. no. 54, pp. 1-40, figs. 1-22. 

 Kirkland, A. H. 1897. The Habits. Food and Economic Value of the American Toad. 



Bull. Hatch Exp. Sta. Mass. Agr. Coll., no. 46. pp. 3-30, pi. 2. 

 Judd, S. D. 1899. The Efficiency of Some Protective Adaptations in Securing Insects 



from Birds. Amer. Xat.. vol. 33, pp. 461-484. 

 Palmer, T. S. 1900. A Review of Economic Ornithology. Yearbook U. S. I)rpt. Agric. 



1899, pp. 259-292. 

 Judd, S. D. 1901. The Food of Nestling Birds. Yearbook U. S. Dept. Agric. 1900, pp. 



411-436, pis. 49-53. n gs. 48-56. 

 Forbes, S. A. 1903. Studies of the Food of Birds, Insects and Fishes. Second Ed. Bull. 



111. St. Lab. Nat. Hist., vol. i, no. 3. 

 Weed, C. M., and Dearborn, N. 1903. Birds in their Relations to Man. 8 + 380 pp., 



figs. Philadelphia and London. J. B. Lippincott Co.* 



INSECTS IN RELATION TO DISEASES 

 Blandford, W. F. H. 1896. The Tsetse fly-disease. Nature, vol. 53, pp. 566-568, figs. 



I, 2. 



Sternberg, G. M. 1897. The Malarial Parasite and other Pathogenic Protozoa. Pop. 



Sc. Mon., vol. 50, pp. 628-641, figs. 1-3. 

 Kanthack, A. A., Durham, H. E., and Blandford, W. F. H. 1898. On Nagana. or Tsetse 



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 Finlay, C. J. 1899. Mosquitoes considered as Transmitters of Yellow Fever and Malaria. 



Psyche, vol. 8, pp. 379-384. 

 Nuttall, G. H. F. 1899. On the role of Insects. Arachnids and Myriapods, as carriers in 



the spread of Bacterial and Parasitic Diseases of Man and Animals. A Critical and 



Historical Study. Johns Hopk. Hosp. Rept., vol. 8, no. i, 154 pp., 3 pis. 

 Ross, R. 1899. Life-History of the Parasites of Malaria. Nature, vol. 60, pp. 322-324. 

 Christy, C. 1900. Mosquitos and Malaria: a summary of knowledge on the subject up 



to date; with an account of the natural history of mosquitos. 9 + 80 pp., 5 pis. 



London. 

 Howard, L. O. 1900. Notes on the Mosquitoes of the United States: giving some account 



of their structure and biology, with remarks on remedies. Bull. U. S. Dept. Agric., 



Div. Ent., no. 25 (n. s.), 70 pp., 22 figs. 

 Howard, L. O. 1900. A contribution to the study of the insect fauna of human excrement 



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Sc., vol. 2, pp. 541-604, pis. 30, 31, figs. 17-38. 



Ross, R. 1900. Malaria and Mosquitoes. Nature, vol. 61, pp. 522-527. 

 Ross, R., and Fielding-Ould, R. 1900. Diagrams illustrating the Life-history of the 



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 Grassi, B. 1901. Die Malaria-Studien eines Zoologen. 8 + 250 pp., 8 taf. Jena. G. 



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McClure, Phillips & Co. 

 Sternberg, G. M. 1901. The Transmission of Yellow Fever by Mosquitoes. Pop. Sc. 



Mon., vol. 59, pp. 225-241. 

 Howard, L. O. 1902. Insects as Carriers and Spreaders of Disease. Year-book U. S. 



Dept. Agric. 1901, pp. 177-192, figs. 5-20. 

 Braun, M. 1903. Die thierischen Parasiten des Mensehen. Rev. Ed. 12 + 360 pp., 



272 figs. Wiirzburg. 



