xl Trans. Acad. Sci. 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 sos). ssesssices's veswae sepeas Adolf Alt. 
First Vice-President..... oe veeee «+--+ William Trelease. 
Second Vice-President..... sie cameue Joseph Spiegelhalter. 
Recording Secretary ......sssee-ceees Ernest P. Olshausen. 
Corresponding Secretary..... hea hede August Hunicke. 
Treasurer ..... sive chee sstectege'ssuves Enno Sander. 
Librarian......... is cide da eueeia be --G. Hambach. 
CUratOrs..cocercees sean amen +e seeeeeG, Hambach, 
Frank Schwarz, 
Julius Hurter. 
DiPOCtOS 6 oi.c vac cicaekcanave estas Cpa 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. 
REPORTS 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. 
