86 NEW YORK ZOOLOGICAL SSO CIEANe 
during 1906. The number of schools in which aquaria were 
either installed or renewed was 104, some schools having two or 
more aquaria. They were supplied with specimens only at the 
request of the principal or the teacher, and in most cases delivery 
was made at the schools by a messenger from the Aquarium. 
Inexpensive aquaria have been provided either by the Board 
of Education or by the teachers themselves. Sea-water has been 
supplied from the Aquarium with marine plants, in order that 
the school aquaria might be made self-sustaining or “balanced” 
by the necessary plant life, to secure oxygenation of the water. 
Specimens have been sent to teachers in the kindergartens and 
in a few hospitals, as well as to those in primary and grammar 
schools. University professors have also used considerable mate- 
rial, consisting of both marine invertebrates and fishes. 
Many classes, accompanied by teachers, have visited the Aqua- 
rium, the total number of pupils for 1906, as far as enumerated, 
being 5,503. They have had the freedom of the Aquarium labora- 
tory, where living corals and other delicate organisms offer op- 
portunity for natural history study. 
Instruction in caring for small aquaria has been given constantly 
by Mr. Spencer of the Aquarium staff, who has also managed the 
delivery of specimens. 
The Aquarium makes no charge for material or delivery, 
merely desiring to be of service to the teachers. 
ACKNOWLEDGMENTS. 
The United States Bureau of Fisheries has supplied most of 
the eggs of fishes required for the hatchery, which, as a practical 
illustration of the art of fish-culture, is an important feature at the 
Aquarium. Eggs of the smelt and yellow perch were furnished 
by the New York Fish Commission. 
Mr. A. W. Dimock, of Marco, Florida, presented two mana- 
tees. The larger of these, a specimen ten feet long and weighing 
g1o pounds, was injured in capture and did not live long. The 
other specimen, six feet in length, is in fine condition after five 
months of captivity. 
Both of these animals were transported free from Miami, Flor- 
ida, to New York, through the kindness of Mr. Theo. G. Eger, 
Vice-President of the Clyde Steamship Company, and Mr. J. P. 
Beckwith, General Traffic Manager of the Florida East Coast 
Railway. The Zoological Society is also indebted to these gentle- 
men for the free transportation of specimens received in Ig05. 
