9 8 



W. C. ALLEE. 



years off the wharf of the U. S. Fish Commission at Woods Hole- 

 The manuscript notes of the daily readings for the winters of 

 1916-17 and 1917-18 were made accessible through the kindness 

 of Superintendent W. H. Thomas. The noon temperatures for 

 the months of December, January, February and March of these 

 years are given in Table I. From December 29, 1917, to March 

 19, 1918, a period of 80 days, the noon temperature did not rise 

 above freezing, except on March 6, when it reached 32.5 F. 



These temperatures are summarized in Table II., together 

 with a similar summary for the period of 1902-06 taken from 



TABLE II. 



Showing Mean, Maximum and Minimum Noon Temperatures off the Fish Com- 

 mission Wharf at Woods Hole, Mass. 



'Inexact; below the freezing point of water. 



the Biological Survey. It will be noted that the mean tempera- 

 ture for each of the months considered is less than for the corre- 

 sponding month of the preceding year or of the five-year interval ; 

 that February, the coldest month, is only slightly below that of 

 the other years, but that the other months are all decidedly 

 lower and that the cold weather continued practically through 

 March. 



The mean noon temperature for the 12 1 days listed, in the 

 five-year period from 190206 was 34.4 degrees. In 1916-17 

 there was a mean temperature of 35.5 degrees during this winter 

 period, while for 1917-18 the mean temperature was only 33.3 

 degrees. This gives a temperature deficit of i.i degrees per day 

 when compared with the longer period, and of 2.2 degrees when 

 compared with the preceding winter. 



Trie effect of an usually cold winter should be most marked 



