The expense of the publication of this paper is covered by a 

 grant from the Emerson McMilHn Research Fund. 



William R. Lazenby, 

 E. L. Rice, 

 Erank Carney, 



Trustees^ 



Publication Committee: 



J. C. Hambleton, E. L. Rice, Bruce Eink. 



Date of pubHcation, June 15, 1911. 



353 



