78 Meteorological Observations 
and contrivance for voiding the smoke, to be fixed on the 
top of a chimney stack with two or more conrses of brick- 
work, and having for its object to prevent the smoke arising 
from the fire in the grate being driven back into the room, 
as well by excluding all winds from the orifice of the chim- 
ney, as by promoting the draught of the chimney by means ° 
of a continual accumulation of rarefied air in the cavity of 
the cap.—22d May.—2 months. : 
To John Thackray, of Archer Street, Windmill Street, 
in the county of Middlesex, cabinet-maker, for his method 
of inclosing a seat ina portable stoo!, which seat may be 
applied to other useful purposes.—22d May. 
To William Jenkins, of Birmingham, brass founder, for 
his improvement in the method of manufacturing socket 
castors, used with or affixed to cabinet and other furniture 
and things.—2¢2d May. 
Meleorological Observations madz at Cambridge, from 
May 30 to June 10, 1813. 
May 30.—Very warm, with the different modifications 
variously disposed in different altitudes, with a cloudy 
evening, and gentle showers. Therm. at 3 P.M. 76°, at 
11 P.M. 63°. S. The peacocks this evening sitting on 
the tops of barns and high places, squall more than usual; 
a well-known sign of rain, and one which was verified in 
the present instance. 
May 3).—Warm day, and clear with cirrocumulus and 
cumuli, some of them of rocklike appearance, &c.; fine cleat 
aunset; golden haze. Therm. at 3 P.M. 73°, at 11, 61°. 
June 1.—Very clear sky with a few cumuli and cirri. 
Therm. at 2 P.M. 78°. The cumult began to form after 
great clearness about 2P.M. many of them formed ra- 
pidly, and as soon divided into detachments, and eventually 
disappeared again, remaining nearly in the same place all 
this ime. The currents both by cirri above and weather- 
eocks below appeared to blow in different directions, 
and were very gentle. Towards evening the clouds in- 
creased in different stations, but the haze in the west after 
sunset was pretty clear: The night fine, and the thermo- 
meter at 11 P.M. 63°. 
June 2:—Clear hot day ; the thermometer at 5 P.M. was 
76°; at 11, 61°. There were some confused heavy masses 
of cloud m the morning, but they cleared off, and the day 
was very fine; some cumuli continued to make their ap- 
pearance in the\middle of the day ; by and by a flimsy and 
iss confused 
