---- 1909. A microorganism which apparently has a specific relationship to Rocky Mountain spotted fever. A preliminary report. Jour. Amer. Med. Assoc. iii, p. 373-380.

---- Spotted fever reports 1 and 2. In the 4th Bien. Rept. State Board of Health, Montana, 1909, p. 87-191.

Ricketts, H. T. and Wilder, R. M. 1910. The transmission of the typhus fever of Mexico (tabardillo) by means of the louse, Pediculus vestimenti. Journ. Am. Med. Assoc. liv. p. 1304.

Riley, C. V. and Howard, L. O. 1889. A contribution to the literature of fatal spider-bites. Insect life, Washington, i. p. 204-211.

Riley, W. A. 1906. A case of pseudoparasitism by dipterous larvæ. Canadian Ent. xxxviii, p. 413.

---- 1910 a. Earlier references to the relation of flies to disease. Science n. s. xxxi, p. 263-4.

---- 1910 b. Dipylidium caninum in an American child. Science n. s. xxxi, p. 349-350.

---- 1911. The relation of insects to disease. Cornell Countryman ix, p. 51-55.

---- 1912 a. Notes on the relation of insects to disease. 8vo. Ithaca, N. Y. 51 p.

---- 1912 b. Notes on animal parasites and parasitism. 8vo. Ithaca, N. Y. 55 p.