114 NEW YORK ZOOLOGICAL SOCIETY 



tant plans were placed on file with the New York Zoological 

 Society, and another set was reserved for the use of the Director 

 of the Aquarium. A splendid model of the proposed new build- 

 ing has been on exhibition for several months in the American 

 Museum of Natural History. There is little hope that the city 

 will undertake the erection of a new building at the present 

 time. 



Dr. G. A. MacCallum of New York continued during the 

 year his investigations relative to the causes of death in fishes 

 sent to him from the Aquarium. His work is largely a study of 

 the parasites found in such specimens and will, when completed, 

 throw much light on the subject of the causes of death of fishes 

 in captivity. 



Dr. George G. Scott, of the College of the City of New York, 

 continued at the Aquarium his studies of the blood of fishes with 

 regard to osmotic pressure, and salt content. More recently he 

 has been studying the vitality of fishes in relation to the amount 

 of oxygen and carbon dioxide in the water. 



Prof. C. F. W. McClure, of Princeton, was supplied by the 

 Aquarium with trout embryos for use in his studies of the ori- 

 gin of the lymphatic system. 



The Aquarium has continued to assist teachers in the pub- 

 lic schools in maintaining small salt water aquaria in their class- 

 rooms. This work has been going on for many years and is 

 highly appreciated by the teachers. Several hundred aquaria 

 have been stocked since this was undertaken and the cost has 

 been small, as the specimens supplied could readily be brought 

 in from the adjacent seashore by the Aquarium collector. 



The exhibits of the Aquarium are supplied at the expense 

 of the New York Zoological Society, the specimens received from 

 other sources constituting a very small proportion of the total 

 collections. Among the gifts which should be mentioned are 

 the important contributions of fish eggs for the Aquarium hatch- 

 ery, presented by the United States Bureau of Fisheries. These 

 included brook, rainbow and black-spotted trout, whitefish, sil- 

 ver and land-locked salmon, yellow and pike perch. 



The young fishes hatched were, as usual, liberated in New 

 York State waters. 



Fish eggs were also presented by the Tuxedo Club, through 

 Mr. Edwin C. Kent. A collection of local fishes was received 

 from the New Jersey Fish Commission. The porpoises referred 



