212 



LAND DRAINAGE 



months of December, January and February in New 

 York City for thirty-six years, 1872 to 1907 1 1 



TABLE XXII 



MEAN TEMPERATURE FOR THE MONTHS OF DECEMBER, JANUARY, 

 AND FEBRUARY 



These means are again averaged for ten-year periods and 

 stand as follows : 



1872 to 1881 . ... . V . . 31.14 F. 



1882 to 1891 32.97 F. 



1892 to 1901 31.88 F. 



1898 to 1907 31.04 F. 



It may be argued that the nearness of the ocean might 

 equalize the temperature of New York City. The follow- 

 ing table is even more interesting than the one above : 



1 Walter H. F. Grau. Harper's Weekly, Vol. 52, No. 2713, 



(1908), p. 8. 



