OF ARTS AND SCIENCES. 329 



Eight hundred and ninetieth Meeting. 



April 14, 1807. 



The Academy met at the house of John C. Ropes. 



Vice-President George L. Goodale in the chair. 



The chair announced the death of James Joseph Sylvester 

 and Karl Weierstrass, Foreign Honorary Members in Class I, 

 Section 1. 



The following papers were read : — 



The study of English at Harvard College. By Barrett 

 Wendell. 



Electricity and Ether. By Arthur G. Webster. 



The following papers were presented by title : — 



A Measure of Variability and the Relation of individual 

 Variations to specific Differences. By Edwin Tenney Brew- 

 ster. Presented by E. L. Mark. 



Contributions from the Gray Herbarium of Harvard Univer- 

 sity. New Series, No. XI. — 1. Revision of the Mexican and 

 Central American Species of Houstonia. 2. Key to the Mexi- 

 can Species of Liahum. 3. Descriptions of new and little 

 known Plants from Mexico. By J. M. Greenman. Presented 

 by B. L. Robinson. 



