Thériot, I. Mexican mosses collected by Brother Arsène Brouard—III. 44 pp., 22 text figs. Aug. 25, 1931. (Publ. 3122.)
5.
Brackett, F. S., and Liddel, Urner. Infra-red absorption bands of hydrogen cyanide in gas and liquid. 8 pp., 5 text figs. Aug. 5, 1931. (Publ. 3123.)
6.
Snodgrass, R. E. Morphology of the insect abdomen. Part I. General structure of the abdomen and its appendages. 128 pp., 46 text figs. Nov. 6, 1931. (Publ. 3124.)
7.
McAtee, W. L. Effectiveness in nature of the so-called protective adaptations in the animal kingdom, chiefly as illustrated by the food habits of Nearctic birds. 201 pp. Mar. 15, 1932. (Publ. 3125.)
8.
Swanton, John R. Modern square grounds of the Creek Indians. 46 pp., 5 pls., 15 text figs. Nov. 11, 1931. (Publ. 3126.)
9.
Wulf, Oliver R. The determination of ozone by spectrobolometric measurements. 12 pp., 3 pls., 5 text figs. Nov. 30, 1931. (Publ. 3127.)
10.
Miller, Gerrit S., Jr. Human hair and primate patterning. 13 pp., 5 pls., Dec. 19, 1931. (Publ. 3130.)
11.
Aldrich, L. B. Supplementary notes on body radiation. 12 pp., 5 text figs. Feb. 2, 1932. (Publ. 3131.)