( Continued from ptti/e 3 of covt-r. ) 



VOLUME 52. 



Thaxter, Roland. — New or Critical Species of Cliitonomyces and Rickia. 

 pp, 1-54. June, 1916. 70c. 



Bridgman, p. W^ — -The Velocity of Polymorphic Changes between Solids, 

 pp 55-88. July, 1916. 50c. 



Bridoman, p. W. — Polymorphism at High Pressiu-es. pp. 89-187. July, 

 1916. $1.00. 



PiEKCE, George W. — Theoretical Investigation of the Radiation Charac- 

 teristics of an Antenna, pp. 189-252. October, 1916. .«1.00. 



Walton, A. C. — The 'Refractive Body' and the ' Mitooliondria ' of Ascaris canis 

 Weruer. pp. 25.3-266. 2 pis. October, 1916. 40c. 



Wn.soN, KnwiN B.. and Moore, C. L. E. — Differential Geometry of Two Diirieu- 

 si(>n:il .Siirf.'iccs in Hyperspace. pp. 267-.368. November, 1010. $1..')0. 



