CONTENTS. 



Page. 



I. New Indo-Malayan Laboulbeniales. By Roland Thaxter . . 1 



II. Polymorphic Transformations of Solids under Pressure. By P. W. 



Bridgman 53 



III. A Quantitative Study of Certain Perthitic Feldspars. By Charles 



H. Warren 125 



IV. The Glacial-Control Theory of Coral Reefs. By Reginald A. 



Daly 155 



V. The Australian Honey-Ants of the Genv^ Leptomyrm^x Mayr. By 



William M. Wheeler 253 



VI. Mitosis and Multiple Fission in Trichomonad Flagellates. By 



Charles A. KoFom and Olive Swezy 287 



VII. Expansion Problems with Irregular Boundary Conditions. By 



Dunham Jackson 381 



VIII. The Mechanics of Telephone-Receiver Diaphragms, as Derived from, 

 their Motional-Impedance Circles. By A. E. Kennelly and 

 H. A. Affel 419 



IX. On the Development of the Coral Agarida fragilis Dana. ByJ. W. 



Mavor 483 



X. (I) Compositae new and transferred, chiefly Mexican. By S. F. 

 Blake. (II) New, reclassified, or otherwise noteworthy Sperma- 

 tophytes. By B. L. Robinson. (Ill) Certain Borraginaceae 

 new or transferred. By J. Francis Macbride 513 



XI. On the Life-History of Ceratomyxa acadiensis, a new species of 

 Myxosporidia from the eastern coast of Canada. By James W. 

 Mavor 549 



XII. Polymorphic Changes under Pressure of the Univalent Nitrates. 



By p. W. BRffiGMAN 579 



