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(Continued from page 3 of cover.) 
VOLUME 51. 
Tuaxren, aaa New tid bhaaven Laboulbeniales. _ pp. 1-51. August, 
15. 
tuscan Ye P. w.— art aT fe ti f Solid jer Pr pp. 
53-124. September, 1016, 
+: WaRREN, CHartes H.— A Quantitative Study of Certain Perthitic Feldspars. 
pp. 125-154. October, : 1915, 
Daty, Reainatp A.— The Glacial-Control Theory of Coral Reefs. pp. 155- 
251... Nov 
5. $1.25. 
Wueeren, Wittram Morron.— The ae _Honey- Ants of the Genus 
-  Leptomyrme yr 53-286. 50c. 
a 
Kororp, CuarLes Arwoop, and Swezy, Otte Mitosis and Multiple Fission 
in Trichomonad Flagellates. pp. 287-379. 8 pll. November, 1915, $1.50. 
J page Pern aM.— Expansion Problems wih Irregular Boundary Conditions. 
pp. 381-417. November, 1915. % 
Kenne.tiy, A. E., and porte H. A.— The hn chanics of Telophone-Reoeiver 
Di , as Derived from their Motional-Impedance ircles 
482. November, ave Hons 
Mavor, J. W.— Ont he Development of the Coral Agaricia fragilis Dana, PP. 
915. 90c.. 
483-511. 
. Braxz, 8. F.— (1) Compositae new and transferred, chiéfly Mexican; (II) 
Sperm 
‘Rosrnson, B. L.— New, reclassified, or otherwise noteworthy 
' phytes; ete engage Se ee duitegsnmasd new or trans- 
ferred. 3-548. January, 1916. 
