400 PROCEEDINGS OF THE AMERICAN ACADEMY 



Eight hundred and sixtieth Meeting. 



June 14, 1893. — Monthly Meeting. 



The Academy met at the Physiological Lecture Room of 

 the Harvard Medical School, Boston. 



The President in the chair. 



Harold C. Ernst explained the methods of investigation 

 pursued in the study of bacteriology, illustrating his remarks 

 with diagrams and lantern slides. 



The attention of the Academy was then invited to an 

 exhibit consisting of two main sections : — 



1. Cultures of bacteria, including pathogenic and non-pathogenic 

 organisms, in various nutrient media, each one, so far as possible, 

 grown upon the standard media, in tube and plate culture, and the 

 various cultures of the same organism grouped together and labelled 

 with the common name ; so that each one could be seen growing upon 

 one or more of the following materials : nutrient gelatine (plain or 

 with glycerine), nutrient agar-agar (plain or with glycerine), potato, 

 bouillon, blood serum, milk, peptone, bread paste. Thus an oppor- 

 tunity was afforded for a comparative study of a number of varieties 

 of bacteria under similar conditions. 



2. Preparations placed under the microscope, showing the various 

 appearances of the bacteria in tissues and in pure culture. 



At the close of the lecture the President, after paying 

 a just tribute to Dr. Ernst's interesting communication, pro- 

 posed a vote of thanks, which was unanimously adopted. 



Eight hundred and sixty-first Meeting. 



October 11, 1893. — Stated Meeting. 



The President in the chair. 



The Corresponding Secretary read letters from J. Bryce, 

 L. Hermann, and F. A. Kekule, acknowledging their elec- 

 tion as Foreign Honorary Members ; from G. K. Gilbert and 

 F. R. Hutton, acknowledging their election as Associate 



