176 THE GEOGRAPHY OF MAMMALS 



List op the Principal Authorities referred to 

 in Chapter VI. 



(1) Allem, J. A.— "The Geographical Distribution of North 

 American Mammals." Bull. Amer. Mus. Nat. Hist., iv., p. 199. 1892. 



(2) Merriam, C. H.— " The Geographical Distribution of Life in 

 North America, with Special Reference to the Mammalia." Proc. Biol. 

 Soc. Washington, vii., p. 1. 1892. 



(3) Zittel, Karl von. — " The Geographical Development, Descent, 

 and Distribution of the Mammalia." Geol. Mag., 3rd ser., x., p. 401. 

 1893. (Translated from the S. B. k. Bayer. Akad. Wiss., xxiii., p. 137. 

 1893). 



