REMARKS. 



The weather for the month will be long remembered on account 

 of the unusually low temperature that prevailed. On the 4th the 

 maximum was one degree below zero, and on the 5th the minimum 

 fell to 26.5 degrees below zero, while the mean hourly record for the 

 day was 12.7 degrees below zero. On five days the mean hourly 

 temperature was below zero, and on but one day was it above the 

 freezing point. On ten days the minimum fell below zero, while on 

 but eight days did the maximum rise above freezing. The mean for 

 the month was more than nine degrees below the normal. 



The mean barometer was slightly above the normal ; the fluctua- 

 tions were generally large and of considerable duration. 



The mean relative humidity was nearly ten per cent above the 

 normal and the mean dew point ten degrees below the normal. The 

 total precipitation was about one-third more than usual, much of it 

 occurring as snow. Other departures from normals were unimportant. 



On January ist the times of observation were changed from 7 A. J/., 

 2 P. M. and g P. M., to 8 A. M. and 8 P. M. The mean barometer, 

 7nean sefisible tef/iperature, dew point, force of vapor, relative humidity 

 and c/oudiness observed are now computed from t7oo tradings per day 

 instead of from three readings as heretofore. 



J. E. OSTRANDER. Meteorologist. 

 F. F. HENSHAW. Observer. 



Erratum: Bulletin No. 180. Total annual precipitation should 

 read 44.45. 



