888 LITERATURE CITED 



103. DiLLhN, J. G. (CapiJ. 1920. The Eflect of Forest Fires ou Game. Am. Game Prol. Assn. Bull. 9 

 ^3J : 5-7. 



1U4. ■UoKi'." 1890. A Grouse Combat. Forest and Stream 35 U5j : 286. 



105. Douglas, David. 1833. Observations on Some Species of the Genera Teltao and Urly.x, Natives ol 



North America. Trans, of Linnaean Society of London 16 (,1> : 137, 148. 



106. Douglass, A. E. 1928. Qimatic Cycles and Tree-Growth. Carnegie Inst, of Washington Publ. 289 



(2) : 1-166. 



107. Dunsinc, W. J. 1918. The Scarcity of Kuffed Grouse. American Field 89 {6j : 131. 



108. Durant, a. J., and E. R. Doll. 1941. Ulcerative Enteritis in yuail. Univ. of Missouri Agr. Exp. Sta. 



Res. Bui. 325 : 5, 7. 



109. DwicHT, J., Jk. 1900. The Moult of North .\merican Telraonidae iQuails, Partridges and Grouse). 



Auk 17 (1, 2) : 34-51, 143-166. 



110. E. S. K. 1884. Massachusetts Game Prospects. Forest and Stream 22 (12j : 227. 



111. Eaton, Elon Howard. 1910. Birds of New York. N. Y. S. Museum Memoir 12 (iK 



112. 1926. Game Enemies. Game Breeder 28 [4) : 127. 



113. Edceworth, F. H. 1935. Cranial Nerves of Vertebrates. Cambridge Univ. Press, England. 



114. Edituk. 1874. [Comments Following Article "Grouse and Woodcock."'] Forest and Stream 2 (2) : 22. 



115. Editor. 1925. Interesting Grouse News. American Field 104 (41) : 404. 



116. Edwards, Gcobce W. 1754. On the Pheasant of Pennsylvania, and the Otis Minor. Philosophical 



Trans. Roy. Soc. of London 10 (63) : 450-452. 



117. 1758. Gleanings of Natural History 5. London. 



118. ElFRiG, C. W. G. 1910. Stomach Contents of Some Canadian Birds. Ottawa Naturalist 24 (1) : 18. 



119. Elliott, Daniel G. 1864. The Game Birds of the United States. U.S.D.A. Annual Report : 363-364. 



120. 1897. The Gallinaceous Game Birds of North America. Suckling & Co., London. 



121. Elliott, Robert. 1906. Extracts From the Diary of the Late Robert Elliott. Ollawa Naturalist 20 



(6) : 120-126. 



122. Elton, Charles. 1924. Periodic Fluctuations in the Numbers of .Animals: Their Causes and Effects. 



Br. Jour. Exp. Biol. 2 : 11916.3. 



123. 1927. Animal Ecology. MacMillen Co., New York. 



124. 1942. Voles, Mice and Lemmings. Clarendon Press, Oxford. 



125. English, P. F., and L. J. Bennett. 1942. Food Habits of the Gray Fox in Pennsylvania. Penna. Game 



News 12 (12) : 10-22. 



126. 1942. Red Fox Food Habits in Pennsylvania. Penna. Game News 

 12 (11) : 6-7, 22-23. 



127. Ebrington, p. L. 1934, Vulnerability of Bobwhite Populations to Predaticm. Ecology 15 (2) : 110- 



127. 



128. 1937. What Is the Meaning of Predation? Smithsonian Inst. Annual Report. 1936 

 : 243-252. 



129. 1937. Winter Carrying Capacity of Marginal Ruffed Grouse Envimnmenl in Norlli- 

 central United States. Canadian Field Naturalist 51 (3) : 31-34. 



130. 1942. On the Aiialvses of Productivity in Populations of Higher Vertebrates. Jour. 

 Wildlife .Management 6 (2l : 165-181. 



131. Errington, p. L., F. Hamersthom and F. N. Hamerstrom, Jr. 1940. The Great Horned Owl and Its 



Prey in North-central United Slates. Iowa .State College Res. Bull. 277. 



132. EWBANK, Ernest L. 1907. The Ruffed Grouse Scarcity. Forest and Stream 69 (24) : 936. 



133. Farrow, E. P. 1925. Plant Life on East Anglican Heaths. Cambridge Univ. Press.. England. 



134. Fellows. J. Otis. 1880. Weight- of Ruffed Grouse. Forest and Stream 15 i20i : .389. 



135. FiNNEGAN. G. P. 18W. Parlridgi- and Woodcock. Forest and Stream 53 (10) : 185. 



136. Fisher, A. K. 1907. Hawks and Owls From the Standpoint of the Farmer. U.S.D.A. Iti.d. Survey 



Circ. 61. 



137. Fisher, Lee William. 1939. Studies of the Eastern Ruffed Grouse in Michigan ( lionasa umhelliis 



umbellus). Michigan State Coll. Agr. Exp. .Sta. Tech. Bull. 166. 



138. Fisher, R. A. 1937. The Design of Experiments. Oliver & Boyd, London. 



139. 1941. Statistical Methods for Research Workers. Oliver & Bov<l. Inndon. 



