124 NEW YORK ZOOLOGICAL SOCIETY 



hours duration, and all collections were made within twenty 

 miles of the Battery. The boat work was carried along chiefly 

 by volunteers from the office as occasion offered, with but little 

 interruption of the routine of the Aquarium. 



One important result of the work of the SeaJiorse was the 

 establishment in two large tanks in the Aquarium of sharks 

 accompanied by shark-suckers (Echeneis) and pilot fishes 

 (Seriola). The habitual association of the two smaller species 

 with the shark is here presented in living, moving groups, which 

 constitute probably the most notable exhibit ever made in an 

 aquarium. One of the shark-suckers has accompanied its shark 

 for several months, attaching itself to any part of the shark's 

 body, sometimes riding on top of its head. The pilot fishes travel 

 with the shark in characteristic manner. They evidently are 

 at some disadvantage when in confinement, as the shark occa- 

 sionally kills one of the group. All of these specimens w^re 

 captured at Sandy Hook in lower New York Bay. 



Reservoir of Stored Sea Water. — There has been some loss 

 of sea water during the past two years, that cannot be attributed 

 to evaporation. Each of the four sections of the reservoir has 

 been emptied in turn, tested and found water-tight. The pipe 

 lines between the reservoir and the pumps show no leaks. Cer- 

 tain exhibition tanks have been emptied and found tight. It is 

 possible that there is some minute leak in the floor of one of the 

 exhibition tanks, which will be difficult to locate. During the 

 year two additions of pure sea water w^ere made to the reservoir 

 supply, the water being brought in a tank boat from points out- 

 side Sandy Hook. The capacity of the reservoir is 100,000 

 gallons. On each trip of the well-boat Seahorse, pure sea water 

 has been brought to the Aquarium in tanks carried on deck. 

 The quantity thus added to the reservoir during the past summer 

 amounts to approximately 2,635 gallons. 



Publications. — The May and July numbers of the Zoological 

 Society Bulletin, both of which were Aquarium numbers, were 

 devoted entirely to the keeping of small fresh-water fishes, in- 

 cluding exotic species bred by fish fanciers. These two numbers, 

 both prepared by Miss Mellen, were soon sold out, when they 

 were reissued as a pamphlet entitled Fishes in the Home, which 

 is much in demand. 



The Zoological Society Bulletin for March, 1920, devoted 

 entirely to the history of the Aquarium building, formerly 



