130 
been greatly below that at Manchester, whereas it ought, 
from the locality, to be more. 
From careful comparisons with the rainfall at Manchester 
I find 39752 inches as the probable rainfall at Oldham for 
the twenty-seven years, 1 1 feet from the ground. 
The mean monthly fall for each period was as follows 
MONTH. 
1836—1852, 
1853—1857. 
1858—1862, 
1853—1862. 
Inches. 
Inches. 
Inches. 
Inches. 
January .... 
2-195 
1-955 
2-537 
2-246 
February .... 
1-825 
2-130 
2-029 
2-079 
March 
2-090 
1-509 
3-481 
2-495 
April 
2-147 
1-740 
2-230 
1-985 
May 
2-328 
2-305 
2-577 
2-441 
J une 
3-055 
2-379 
3-898 
3-138 
July 
3-490 
3-476 
3-567 
3-521 
August 
3-493 
3-358 
3-471 
3-414 
September . . 
2-880 
1-912 
4-622 
3-267 
October .... 
3-230 
4-637 
4-020 
4-328 
November . . 
3-399 
2-075 
2-222 
2-148 
December . . 
2-336 
3-326 
3-415 
3-370 
Sums .... 
32-468 
30-802 
38-069- 
34-482 
Corresponding 
] 
Periods at 
Manchester. 
36-859 
31-371 
33-757 
32-564 
i 
l 
Mr. Joseph Casautelli exhibited a new Registering: 
Barometer. The tube in this instrument is Gay Lussac’s, or 
the syphon form, and is enclosed in a mahogany case, in 
which is an eight days clock. The arrangement is such 
that at the completion of every hour the hammer of the 
clock strikes upon a portion of the apparatus, which impels 
the index point on to the drum and pierces a hole in the 
diagram ; thus forming an hourly record of the height of 
the barometer from week to week. 
