xl Trans. Acad. Set. of St. Louis. 



December 18, 1905. 



President A. Alt in the chair; attendance thirty-five. 



The nominating committee reported the following ballot for 

 the annual election, which was ordered printed and mailed to 

 the members : — 



President Adolf Alt. 



First Vice-President William Trelease. 



Second Vice-President Joseph Spiegelhalter. 



Recording Secretary Ernest P. Olshausen. 



Corresponding Secretary August Hunicke. 



Treasurer Enno Sander. 



Librarian G. Hambach. 



Curators G. Hambach, 



Frank Schwarz, 



Julius Hurter. 

 Directors F. E. Nipher, 



Otto Widmann. 



Mr. John H. Powrie of Chicago gave an illustrated talk on 

 the " Florence Heliochromic Plate," being a description of 

 the methods employed in the Powrie-Warner process of prac- 

 tical color photography. The illustrations were colored slides 

 of portraits, landscapes and flower studies, many of the por- 

 traits having the appearance of water colors and the flowers 

 showing great detail. Mr. Powrie gave a brief outline of the 

 history of color photography and a scientific explanation of 

 how the plates are colored. 



Keports of Officers for the Year 1905. 



The President addressed the Academy as follows : — 



Gentlemen: The St. Louis Academy of Science is again older by a year, 

 in which as in former ones it and its officers have ever been mindful of the 

 high aims as expressed in its constitution, namely, the advancement of 

 science and the establishment of a museum and library for the illustration 

 and study of its various branches. 



This is proven not only by the high order of the papers read at the regular 

 meetings, but also by our published Transactions, which are the lasting 

 evidence of the Academy's work. 



