§2 NEW YORK ZOOLOGICAL” SOCIETY: 
the species living more than ten days. An ideal collection of 
native fishes and invertebrates cannot be maintained under ex- 
isting conditions. The construction of large reservoirs for the 
storage of pure sea water seems to be a necessity if additional 
forms of life are to be added to the salt-water collections. 
The Fresh-Water Collections—The Croton water used for the 
iresh-water collections is not clear enough to permit of the fishes 
being viewed satisfactorily. A reservoir for the storage of fil- 
tered water must be supplied before there can be much improve- 
ment in the fresh-water tanks. 
The system of closed circulation for both fresh- and salt-water 
tanks is employed with the best results in the public aquariums 
of Europe, and also in the aquarium of the U. S. Fish Commis- 
sion at Washington. 
The collection of native fresh-water fishes needing some ad- 
ditions, arrangements were made with the U. S. Fish Commis- 
sion, the New York State Fish Commission, and the South Side 
Sportsmen’s Club for certain food and game species. The 
fishes have been received as donations from the sources men- 
tioned. 
A moderate number of salt-water fishes has been procured 
from local fishing grounds. The following list shows the gifts 
to the Aquarium during November and December: 
Forty gold fish, 7 varieties; 4 snapping turtles, and 8 painted 
turtles, from Henry Bishop, Baltimore, Md. 
Thirty brook trout, 29 rainbow trout, 3 hybrid trout, and 2 
brown trout, from the South Side Sportsmen’s Club, George P. 
Slade, President. 
Four whitefish, 4 pickerel, 3 pike, 1 rock bass, and 9 suckers 
from the New York Fish, Game, and Forest Commission. 
Fresh-water plants, 100 landlocked salmon fingerlings, and 100 
Atlantic salmon fingerlings from the U. S. Fish Commission. 
Fish Hatchery.—A fish hatchery has been installed in one of 
the floor pools of the Aquarium, which will prove an addition 
to its attractions, not only to visitors in general, but to students 
from the schools. This pool, oval in shape and 28 feet long, is 
well adapted to the purpose. Four troughs are placed at the 
sides and fitted with wire-bottomed trays for the eggs of trout, 
salmon, and other species hatched in this manner. The north 
end is supplied with a battery of jars for the eggs of whitefish, 
shad, and other kinds which require to be kept in motion during 
the hatching process. The opposite end is fitted with curved 
