METEOROLOGICAL SYNOPSIS. 129 



1°, and barometer HO.K) inches. 



6 below and barometer 30.(57 inches. 



January, 1863, 



temperature 



V 



February, 186.3, 



do 



6 



December, 1863, 



do 



17 



November, 1862, 



do 



20 



January, 1861, 



do 



4 



January, 1860, 



do 



30 



January, 1859, 



do 



10 



January, 1868, 



do 



15 



January, 1858, 



do 



13 



January, 1856, 



do 



3 



February, 1855, 



do 



20 



below 



below 



do 



30.06 



do 



do 



30.20 



do 



do 



30.07 



do 



do 



30.09 



do 



do 



30.13 



do 



do 



30.24 



do 



do 



30.23 



do 



do 



30.14 



do 



do 



29.57 



do 



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

 perature and high barometer ; the last is striking evidence. In the warm 

 months there is less apparent causal 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 15tli, and the highest at 2 P. M. 

 was 95° on the IGth. The next highest mean of a day was 85.7 in 1856. 

 The mean heat of no four consecutive days here has been so groat, 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. 



[Assem. No. 239. J 17 



