88 NEW YORK ZOOLOGICAL SOCIETY. 



was received here in 1824; President Jackson in 1832; President 

 Tyler in 1843; Louis Kossuth in 1851. Professor ]\Iorse, in- 

 ventor of the telegraph, demonstrated here in 1835 the practica- 

 bility of controlling the electric current. Jenny Lind began sing- 

 ing here in 1850 under the management of P. T. Barnum. Among 

 other notables received here were President Van Buren and the 

 Prince of Wales. The building was used as a landing place for 

 immigrants from 1855 to 1890, during which period 7,690,606 

 immigrants passed through its doors. It was opened as an aqua- 

 rium by the City on December 10, 1896, and on November i, 

 1902, its management was transferred from the Department of 

 Parks to the New York Zoological Society, a private scientific 

 association with a membership of 1,644."" 



RECORD OF MONTHLY MEAN TEMPERATURES AND SPECIFIC GRAV- 

 ITIES AT THE NEW^ YORK AQUARIUM DURING THE YEAR I906. 



(From daily observations made by Mr. W. I. De-Nyse).* 



Temperature Specific 



Months. of Water. Gravity. 



January 39 1.014 



February 36 1.012 



March 38 i.oii 



April 43 i-oio 



May 52 1-013 



June 62 1.013 



July 69 1.013 



August ^2 1 .014 



September 71 i-Oi5 



October 63 1.016 



November 54 1.014 



December 43 1.014 



^Density observations were made with samples of water brought to a 

 temperature of 60 degrees Fahr. 



