METEOR OLO GIGA L OBSER VA TIONS. 



129 



On tkree of the five cold days in January the temperature was below 

 zero ; on the last, or 9th, 4° below ; but the barometer rose to the 

 highest ever known here, 30.52 inches. December 21st was the coldest 

 known for that month, 9° below, and the barometer 30.05. 



MOiSTTH. 



January . 

 February . 

 December 

 Kovember 

 January . 

 January . 

 January . 

 Januaiy . 

 January . 

 January . 

 February . 





Tempera- 



Year. 







ture. 



1863 



1 



1863 



- 6 



1863 



17 



1862 



20 



1861 



- 4 



1860 



30 



1859 



10 



1858 



15 



1858 



13 



1856 



- 3 



1855 



20 



Barometer 

 in inches. 



30.16 

 30.67 

 30.06 

 30.20 

 30.07 

 30.09 

 30.13 

 30.24 

 30.23 

 30.14 

 29.57 



Even in the cold months there is no close connection between low 

 temperature and high barometer ; the last is striking evidence. In the 

 warm months there is less apparent casual influence. 



The "heated period" of July was extensive. Here it was limited to 

 five days — the 13th to the 17th. The mean of that continuous period 

 was 83°.4 ; the highest mean was 86°.3, on the 15th, and the highest at 

 2 p. M. was 95°, on the 16th. The next highest mean of a day, was 

 85°.7, in 1856. The mean heat of no four consecutive days here has been 

 so great, or any other heated period, as in last July. On the hottest 

 day the barometer exceeded the average, and on most of the five days. 



Cab. Nat. 17 



