TWENTY-FIRST ANNUAL REPORT 53 
RATTLESNAKE SERUM. 
The Society expects to secure from Dr. Vital Brazil of Sao 
Paulo, Brazil, 250 tubes of rattlesnake serum, of which 50 will 
be retained by the Society, and 200 will be turned over to the 
Surgeon General of the U. S. Army for use among the troops 
on the Mexican border. 
MEDICAL DEPARTMENT. 
The general health of the animals has remained good dur- 
ing the year, and now that we have a hospital for the proper 
care of the animals, our losses will probably be reduced to a 
minimum. The arrangements for the disposal of dead animals 
with the Prosector, Dr. George S. Huntington, and with the 
American Museum of Natural History, are working smoothly. 
Whatever autopsy is needed for Park purposes, it is performed 
at the Park, and the skeleton and skin are sent for mounting 
purposes to the American Museum of Natural History. All tis- 
sues and soft parts, including also such bony structures as are 
not needed by the American Museum, are turned over to the 
Prosector for his research work. 
TROPICAL RESEARCH STATION. 
The Zoological Society’s Tropical Research Station was es- 
tablished in British Guiana, early in 1916, under the personal 
direction of its Director, Mr. William Beebe. Mr. Beebe was 
ably assisted throughout the year by Mr. G. Inness Hartley, as 
Research Associate, and Mr. Paul G. Howes, Research Assistant. 
The site selected for the Station was at the confluence of the 
three great rivers Essequibo, Cuyuni and Mazaruni. 
The locality chosen proved exceedingly rich in wild life, 
and it is no exaggeration to state that the workers reaped an 
exceptionally rich harvest of results. 
In the autumn the whole party returned to New York and 
at once entered upon the exploitation of the results of the tropi- 
cal work. In the spring of 1917, there will appear, as the first 
annual report of the Station, a large illustrated volume, which 
will be a revelation of zoological work in a new field. In addition 
