144 MAMMALIAN DESCENT. [Lect. V. 



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Mammals," Smithsonian Miscellaneous Gollections, "Washington, 



Nov. 1872, pp. 1-41. 

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involved in Discovery," The American Naturalist, vol. vii., 



Jan. 1873, pp. 1-11. 

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bolivensis), Proc. Geul. Soc, 1860, pp. 73-84, plate vi. 

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of the "Western Territories," Report of the U. S. Geol. Survey of 



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phate Beds of South Carolina," Jour. Acad, of Nat. Sci. of 



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Brontotheridae," Anier. Jour, of Science and Art, vol. vii., 



Jan. 7, 1874, pp. 1-8, plates i., ii. 

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Address delivered before the American Association for the 



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Amer. Jour, of Science, vol. xx., September 1880, pp. 235-239, 



figs. 1-2. 



In this paper Professor Marsh remarks (p. 228) : — 



" Mesozoic mammals have been very generally referred to the 



Mar.-iupialia. An examination of aU the known remains of 



