XXvi Proceedings. 
FEeBruARY 6TH, 1893. 
President Pritchett in the chair, ten members present. The 
Corresponding Secretary read a letter from the president of 
the National Geographical Society, inviting the Society to 
appoint a representative to act on the Advisory Committeé 
for the Geographical Conference to be held in Chicago. This 
was referred to the Council for power to act. 
Fepruary 20TH, 1893. 
The Academy met in the lecture rooms at Washington 
University with 75 members and visitors present. 
Dr. C. O. Curtman delivered a lecture on ** The Detection 
and Analysis of Blood.’’ The qualities of blood were described 
and the morphological and chemical tests for showing the 
difference between the blood of animals and that of man were 
explained. It was shown that the human blood could not 
safely be distinguished from that of the dog or monkey. The 
lecture was illustrated by a number of lantern slides. 
Marca 6TH, 1893. 
President Pritchett in the chair, and 14 members and 4 
visitors present. 
r. W. Townsend Porter read a paper on ‘* The Question 
of a Co-ordinating Center in the Ventricles of the Heart.’’ 
Dr. Porter also read a pepe: on ‘* The Results of Ligation 
of the Coronary Arteries.’’ The paper gave the result of a 
series of interesting experiments. 
Dr. Porter read a paper on ‘* The Physical Basis of Pre- 
cocityand Dullness.’’. The paper was based on the examination 
of over 30,000 of the school children of St. Louis. The 
. na were tabulated and brought out some very interesting 
 Tacts. 
