THE PUBLIC AQUARIUM 



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but the practice of driving air to the exhibition tanks having proved 

 effective when for any reason it is necessary to stop the flow of 

 water, the reserve pumps are used seldom. A large air compressor 

 has been used at the New York aquarium for several days at a time 

 with satisfactory results when circulating pumps stopped. 





EXHIBITS 



The public aquarium is an institution that exists under the neces- 

 sity of procuring its living exhibits directly from nature's sources 

 of supply, the animal dealer having but a limited list of aquatic 

 forms of life to offer. There being no commercial purveyors, the 

 collector for the aquarium must be prepared to go afield whenever 



