161 
XII.— An Account of the Fall of Rain at Manchester, 
from the Year 1786 to 1857 inclusive. 
By Mr. Joun Cortis. 
Read November 16th, 1858. 
Turis paper has been prepared with a view of making the 
tables complete to the end of last year, and of showing at 
a glance the amount of rain which has fallen during the 
last 72 years. The account of the fall of rain from 1786 
to 1793 inclusive is taken from the tables prepared by Mr. 
George Walker, and published in the Society’s Memoirs, 
vol. iv. pp. 584 and 585, old series. From 1794 to 1840 
inclusive, from the tables prepared by Dr. Dalton, and pub- 
lished in the Society’s Memoirs, vol. v. part ii. p. 668, old 
series; vol. i. p. 496, and vol. vi. pp. 575 and 576, new 
series. From 184] to 1854 inclusive, from observations 
taken by Mr. Joseph Casartelli, of this city, who kindly 
communicated them to me. And from 1855 to 1857 in- 
clusive, from observations taken by myself in Plymouth 
Grove, Chorlton-upon-Medlock, on the south side of the 
town. The gauge I employ is a funnel 8} inches in dia- 
meter, with a perpendicular rim 5 inches high, and the top 
of the rim is 2 feet 3 inches above the ground, the fall of 
rain being registered daily at ten p.m. in a graduated glass 
cylinder. The gauge is situated in a garden perfectly free 
from surrounding objects, the nearest buildings being on 
the south side, and twenty to thirty yards distant; while 
it is more than thrice the above distance on the other sides 
from elevated objects. Dr. Dalton’s gauge was a funnel 
10 inches in diameter, surrounded by a perpendicular rim 
3 inches high, the top of which was a little more than two 
