94 
PHYSICAL AND MATHEMATICAL SECTION. 
January 3 1st, 1867. 
E. W. Binney, F.R.S., F.G.S., President of the Section, in 
the Chair. 
“ Results of Raingauge, Anemometer, and Ozone Observa- 
tions, made at Eccles, near Manchester, during the year 
1866,” by Thomas Mackereth, F.R.A.S., F.M.S. 
The following results are intended as a sequence to those 
presented to this section last year. I regret, however, that 
on account of the removal of my observatory, some of the 
observations were interrupted during a period of three 
months. The observations to the end of April were made 
under the same circumstances as those of last year, an 
account of which will be found p. 107, vol. 5, of the Pro- 
ceedings of this Society. The rainfall 3ft. from the ground 
continued to be measured under former circumstances till 
my removal was completed in August, when all the observa- 
tions were resumed as before. The rain is measured from 
three different gauges. Two of the gauges stand close to 
each other in the same plane 3 feet from the ground, 75 feet 
from my house, and 21 feet from my astronomical observa- 
tory. The receivers of the rain gauges on the ground are 
of different shapes, one being round, 10 inches in diameter, 
the other 5 inches square, in both the edges are turned 
inward. The other gauge is now 34 feet from the ground 
and 4 feet above the ridge of my house — and free from 
every obstruction. — Up to April, at my residence, it was 32 
feet from the ground. The receiver is a square one of the 
