102 NEW YORK ZOOLOGICAL SOCIETY 
States Bureau of Fisheries supplied eggs of the quinnat and sil- 
ver salmons from Washington and Oregon, whitefish from the 
Great Lakes and yellow perch from Maryland. The Southside 
Sportsmen’s Club and the Tuxedo Club furnished eggs of the 
brook, rainbow and steelhead trout from their private hatcheries. 
Public school teachers and their classes were aided in every 
possible way, and the usual number of balanced aquaria stocked 
for use in their schools. With ample space set aside for the use 
of teachers and their classes in a larger building, this phase of 
public instruction should become a much more important and 
regular feature of our work. 
It was possible to aid a number of scientific men in their re- 
search by supplying them small marine forms for carrying on 
their work; some of which was done in the laboratory of the 
Aquarium. Mr. George C. Scott, Instructor in the College of 
the City of New York, was supplied with specimens of dogfish 
and laboratory space for carrying on his studies upon the circu- 
lation of the blood in fishes. 
Dr. Jacques Loeb, who has been making inquiries relative to 
the role of salts in the maintenance of life, received killifishes at 
regular intervals. Prof. C. F. W. McClure of Princeton received 
embryos of salmonoid fishes in various stages of development for 
study on the origin and development of the lymphatic system. 
Dr. R. C. Osburn discovered the presence of a species of 
crayfish, (Cambarus limosus), new to New York, in the lakes of 
Central Park and Prospect Park, where it is abundant. This 
species, which is common in the drainage of the Delaware, Sus- 
quehanna and Potomac rivers, has not previously been recorded 
outside of this range. An entirely new and very striking color 
variety of this species has been discovered by him along with the 
normal form. The Aquarium Numbers of the Zoological Society 
Bulletin issued during the year were prepared by Dr. Osburn. 
Assistance was rendered to city authorities and individuals 
in Boston, Buffalo, Philadelphia and San Francisco in connection 
with plans for proposed public aquariums in those cities. 
No special improvements in the building were made during 
the year except such as were necessary for additional office space. 
For the most part the repairs required were of a minor char- 
acter and were chiefly due to the corrosion of piping and pumps 
