29 



mean. At Fort Anu, New York, a lower temperature is recorded on the 10th 

 than ou any other day of the month, which is not the case with the register 

 from any other station. The following table shows the minimum (so far as it 

 can be ascertained from only three observations a day) at all the stations during 

 this depression, with the hour at which It occurred ; also the temperature and date 

 of the coldest day. West of Ohio the 9th was the coldest day during this pe- 

 riod, and further east the 10th. The abrupt change from the 9th to the 10th, 

 which appears in the column of coldest day, Avould not exist, if, instead of taking 

 the mean of the 7, 2, and 9 observations all on the same day, we were to 

 take the mean of whichever three successive ones give the lowest temperature. 

 For instance, if we used the 2 and 9 p. m. observations of the 9th, and 7 a. m. of 

 the 10th, or 9 p. m. of the 9th and 7 a. m. and 2 p. m. of the 10th, the mean of 

 a period of 24 hours would be given intermediate between the 9th and 10th, or 

 rather composed partly of both those days, and instead of the abrupt passage 

 from the one day to the other, which now appears in the table, we would have 

 a gradual transition. 



Table showing the lowest temperature during the cold which prevailed about the 

 9th and lOlh of Novet?iber, 1863. 



Place. 



Cornishville. . 



Lisbon 



Steuben 



Williamsburs: 



NEW HAMPSHIRE. 



Ciaremont 



Littleton 



North Littleton. 



Stratford 



Lowest decree. 



Coldest day. 



Ddtc. 



Temper- 1 Date 



atuve. 



Brandon 10, 9 p. m 



R r f ( I 10, 7 a. m.... ?1 



^"■""'"^t'-^'^ { 10,9p.m.... Si 



Craftsbury 10, 9 p. ni i 



Spiingtield 9, 7 a. in i 



Lunenburg 10, 7 a. ni j 



Rutland 10, 9 p. m 1 



MASSACHUSETTS. 



Amherst ! 9, 7 a. ui . 



Baldwinsville ' 10, 9 p. m . 



Mendon j 10, 9p.m. 



New Bedford i 11, 7 a. ni . 



Sandwich : 10, 9 p. ni. 



T opsficld I 10, 9p.m. 



Willianistown • 9, 7 a. m. 



Westfield : 1], 7 a. ra. 



Teniper- 



atuie. 



