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Art. XXIV. — Meteorological Ohsermtlons made at Leith. By ] 
Mr John Coldstream. 
The Journal from which the following Monthly Results are 
extracted, is kept about SO feet above the level of the sea, and 
a few hundred yards distant from it. The Thermometer is re- 
gistered at 9 A. M. and 9 P. m. ; the Barometer at 9 a. m. Noon, 
4 P, M. and 9 p- m. ; the Pluviometer and Wind- vane at Noon. 
The Hygrometrical observations are made by means of two Ther- 
mometers, one of which has its bulb covered with silk, and mois- 
tened with water ; their indications are registered at Noon. 
JANUARY 1825. 
Results. 
1 , Temperature. 
Mean of the Month, 
Maximum observed, 
Minimum observed, 
Range, 
Mean of the extremes, 
Fahr. Ther, 
.. 40°.975 
.. 60.500 
25.000 
... 35.500 
42.750 
2. Pressure. Inches. 
Mean of the Month, 29.995 
Maximum observed,., 30.900 
Minimum observed, 28.800 
Range, 2.100 
2. Humidity. Fahr. Ther. 
Mean difference during the month between the two Ther- 
mometers, 3°.84 
Maximum ditto,...,....,..,.., 6-50 
Minimum ditto, 0.25 
4 . Rain, 4.070 Inches. 
b. Winds, NE. 2, SW. 25, W. 2, NW. 2., .days. 
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RemarJcs. 
January 2 At 3 a. m. there were several loud thunder-peals, and very vi- 
vid lightning. UpAvards of an inch of rain fell in the course of the 24 hours. 
Wind moderate. Mean temperature 40°. Mean pressure 29.58, increasing. 
5th. Greatest dryness observed. Wind NE. by N. Mean temp. 30°.25. 
9^;^ ^Barometer at 6 p. m. 30.90 inches. The pressure had been variable 
for some days previous, with NE. and SW. wdnds ; and the Aveather very 
agreeable. Temperature moderate. The barometric column has not been ob- 
served so high here for many years past as on this day. An equally great 
