NINETEENTH ANNUAL REPORT 123 



ated from visitors by a plate glass partition, where a lower tem- 

 perature and special ventilation would insure their safety. This 

 is of course not possible in the present building. 



The motion pictures of porpoises obtained by the Society's 

 expedition to Hatteras, and exhibited at the Annual Meeting of 

 the Society and at the Reception at the Aquarium, have been 

 sold for a sum equal to the cost of securing them, a profitable 

 arrangement for the Zoological Society. 



Exchanges of specimens were made with the Aquariums in 

 Detroit and Philadelphia, and with the New York Conservation 

 Commission. 



A full list of donations to the collections and to the library 

 will be found under the heading List of Gifts. 



REPAIRS AND IMPROVEMENTS. 



Under this heading may be mentioned repairs to furnace 

 walls, replacing of boiler tubes, repairs to refrigerating plant 

 and to skylights, all at moderate cost; other repair items were 

 mostly of minor importance. 



An addition of pure sea water, brought in from Sandy Hook 

 Lightship, was made to the reservoir, and some additional rock- 

 work of a decorative character was placed in the tanks. 



The exterior of the Aquarium is and always has been most 

 unsightly. It could be somewhat improved by recoating with 

 the ordinary brown stone preparation, but funds have not been 

 available for the work. 



AQUARIUM PUBLICATIONS. 



The various publications relative to the work of the Aqua- 

 rium which were sold during the year, yielded the sum of $679.06, 

 which will be applied to the publication fund of the Aquarium. 



These documents include the New York Aquarium Nature 

 Series, mostly pamphlets ; the Aquarium numbers of the Zoolog- 

 ical Society Bulletin; post cards and poster stamps. The fund 

 now has a balance of $1,744.73. 



SCIENTIFIC INVESTIGATION. 



The Aquarium has continued to supply investigators with 

 material for work in various fields of biology and to provide 

 laboratory room as far as the limited space of the present build- 



