279 
thunder showers, one rainbow and one meteor observed. 
Rain fell on 12 days, to the depth of 6-41 inches. 
September began with the Barometer at 30108 in. It 
varied up and down, till on the 22d it attained its maximum, 
30°372 in., it then fell, and on the 26th, it marked 29°547 in. 
a range of ‘825. The mean was 30-013 inches. 
The temperature on the 1st was 61°6° ; it rose to its maximum 
on the 6th, 79°, the minimum 45°5° was on the 21st, a range 
of 33°5°, the mean was 62°45°. Only one thunder shower 
occurred, and one Aurora Borealis, but that was unique and 
beautiful, no arch, but bright, isolated beams. 
Rain fell on 5 days, to the depth of 1:85 inch, an uncom- 
monly dry September. 
The warmest spring in a series of ten years, was in 1865, 
54°39° which was 6°3° warmer than the average for the ten 
years. This year, (1871) was also 512° warmer. 
The coldest spring was in 1869, 43°69", which was 4'8° colder 
than the average; and 9:22° colder than this year’s spring 
months. 
The warmest summer in the same series was also in 1865, 
774°; which was 3°82° warmer than the average, and 4°77° 
warmer than in 1871; and this year was 0°95° cooler than the 
average. 
The coldest summer, was in 1869, 70°15° ; which was 3°43° 
colder than the average ; and 2°48° colder than in 1871. 
The warmest day in June, was the 26th in 1864, 91:26°. 
July, 17th 1866, 90-98". 
August, Ist 1864, 89-60°. 
The warmest day in March, was the 3d in 1861, 62°53”. 
April, 22d 1866, 73:06". 
May, 30th 1871, 81:83’. 
The spring of 1871, had the mean of the barometer 29-843 
inches ; the maximum was on April 24th, 30°368 inches, the 
minimum, on March 27th, 29318 in. The mean of each 
month was, March 29°888 in., April, 29-778 in. May, 
29°863 in. The mean humidity was 51°59°, a little more than 
half saturation. The quantity of rain was, for March, 5°6 in; 
