39 
Ordinary Meeting, February 5th, 1861. 
J. C. Dyer, Esq., Vice-President, in the Chair. 
Mr. John Curtis communicated his observations of the 
fall of rain in the years 1860, 1859, and 1858, and compared 
them with Dr. Dalton’s average for 47 years, and with the 
mean of the last 72 and 75 years. The following is a sum- 
mary of the results: — 
Average from 1794 to 1860 35-46 inches. 
„ from 1786 to 1807 36-398 
„ from 1786 to 1860 36-274 
Dallon’s from 1794 to 1840 30'523 
In 1858 30 53 
„ 1859 33-09 
1860 36-24 
Comparing the last year with 1859 it was found that 
The number of rainy days in 1860 were 28 days above that in 
The amount of evaporation „ was 0-92 inches below 
1859. 
The mean temperature 
The highest temperature in shade 
The lowest temperature fn shade 
The highest temperature in sun 
The lowest temperature on grass 
The mean of barometer 
The number of days of snow 
was 3*13 degrees below 
was 9 - 7 degrees below 
was 19*9 degrees below 
was 6’0 degrees below 
was 19 - 9 degrees below 
was 0'031 inches below 
were 8 more than 
Dr. Crace Calvert stated that in consequence of having 
found lead in snuff packed in leaden cases, he had examined 
tea, chicory, &c., but without discovering lead in them, which 
he attributed to the protection afforded, in some instances, by 
the interposition of paper between the article and the leaden 
case, and in others to the absence of sufficient moisture to 
promote chemical action. 
Proceedings— Lit. & Phil. Society — No. 9.— Session, 1860-61. 
