TWELFTH ANNUAL REPORT. 



95 



Record of monthly mean temperatures and specific gravities 

 at the New York Aquarium during the years 1903, 1904, 1905, 

 1906 and 1907. (From daily observations made by Mr. W. T. 

 DeNyse.)* 



1903 





1904 







1905 





1906 



y^ 



1907 





January ... 

 February.. 



March 



April 



May 



June 



July 



August 



September 

 October.... 

 November 

 December. 



37 

 40 

 46 

 56 

 61 

 66 

 68 

 68 

 62 

 52 

 40 



1.010 

 1.008 

 1.009 

 1.014 

 1.013 

 1.013 

 1.013 

 1.013 

 1.011 

 1.014 

 1.014 



34 

 33 

 36 

 40 

 52 

 61 

 70 

 71 

 68 

 59 

 51 

 59 



1.014 

 1.014 

 1.013 

 1.009 

 1.010 

 1.010 

 1.013 

 1.014 

 1.014 

 1.013 

 1.013 

 1.015 



35 

 33 

 36 

 43 

 52 

 62 

 68 

 71 

 68 

 62 

 51 

 44 



1.013 

 1.016 

 1.014 

 1.011 

 1.014 

 1.015 

 1.015 

 1.016 

 1.014 

 1.014 

 1.015 

 1.014 



39 

 36 

 38 

 43 

 52 

 62 

 69 

 72 

 71 

 63 

 54 

 43 



1.014 

 1.012 

 1.011 

 1.010 

 1.013 

 1.013 

 1.013 

 1.014 

 1.015 

 1.016 

 1.014 

 1.014 



39 

 35 

 36 

 42 

 50 

 56 

 65 

 70 

 69 

 62 

 51 

 45 



1.012 

 1.014 

 1.013 

 1.010 

 1.011 

 1.013 

 1.015 

 1.016 

 1.015 

 1.012 

 1.010 

 1.011 



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

 temperature of 60 degrees Fahr. 



Respectfully submitted, 



Charles H. Townsend, 



Director. 



