C 191 ] 



JANUARY. 



The year commenced clear and frosty ; and the first night was 

 the coldest of any during the season, the thermometer indicat- 

 ing fully 1 9 0 Fahr. below freezing. ^ The mean temperatureof 



of the heavy snow-storm of the preceding mouth was generally 

 gone by the 5th of this, in the neighbourhood of London, ex- 

 cepting where it had been drifted to great depth. The amount 

 of rain was twice the usual quantity. On the night of the 25th 

 it rained incessantly, falling to the depth of nearly an inch. The 

 26th was also stormy and wet. After this, the weather, which 

 had been previously mild, became much colder, with sleet and 

 snow on the 29th and 50th. 



Mean Pressure from the 3 daily observations 29.956 inches Fahr. 



Temperature Ditto 3°-45 or 38-21 



Dew Point Ditto 30.36 — 38.04 



Degree of Dryness ... Ditto 0.09 — 0.17 



Degree of Moisture . . Ditto 995 



Force of Vapour .... Ditto 264 inch. 



Least observed degree of Moisture 842 



Maximum Temperature in the Shade .... io°. 5 o or 50.90 



Minimum Temperature in ditto — n°.oo — 12.20 



Maximum Temperature in the Sun 1 i°.oo — 5 1 .80 



Minimum of Terrestrial Radiation -I3 0 7° — 7-34 



Mean Temperature of external Air — 38.58 



Winds. 



North 4 days. I N. East 2 days. 



South 7 . . j S. East 1 



East 3 I N.West 1 .. 



West 5 ■• I S. West 8 



31 days. 



