184 Mr Marshall's Meteorological Observations 



Quantity of rain in inches 10.365. 

 Number of rainy days, 23. 

 Prevalent wind, south-west. 



This has been by much the wettest month in the year. In four days, 

 the 1st, 8th, 14th, and 18th, 4.455 inches of rain fell. During the greater 

 part of the month we have had several atmospherical phenomena. Hail 

 has often fallen in heavy showers. Lightning was frequent about the mid- 

 dle of the month; and on the 20th we had a very heavy thunder storm 

 about noon. The Aurora Borealis appeared towards the latter part of the 

 month, in the evenings ; and on the evening of the 27th a luminous arch 

 appeared in the heavens, stretching from the magnetic east through the 

 zenith to the magnetic west. The barometer and thermometer have been 

 very fluctuating, but we had no frost till the night of the 27th, which 

 lasted about three days. The thermometer fell from 45° to 28° in the 

 night of the 27th, after the occurrence of the luminous arch mentioned 

 above, before the appearance of which the moon was encircled with a dis- 

 tinct halo. 



January 1828. 



Barometer. Inches. 



Maximum on the 28th, - - - 30.17 



Minimum on the 13th, - - - 28.98 



Mean height, - - - 29.67 



Thermometer. 

 Maximum on the 19th and 20th, ... 50° 



Minimum on the 11th, - - - - 23° 



Mean height, - - - - 39.17 



Quantity of rain, 6.192 inches. 

 Number of rainy days, 17* 

 Prevalent wind, south-west. 



From the 5th to the 18th the weather was generally severe ; the wind 

 E. and N. E. acompanied with snow, sleet, &c. On the 11th we had a 

 heavy fall of snow ; wind N. E. ; but it was quickly succeeded by a thaw, the 

 wind remaining in the same quarter. On the 16th and 17th tremendous 

 storms of wind, particularly in the nights. The rest of the month has 

 been surprisingly mild for the season of the year, the nights and days 

 since the 19th having been nearly of the same temperature, and the mean 

 has been since that date 44.61°, — a degree of warmth very unusual in this 

 month, and which is promoting vegetation to a surprising degree. 



February. 



Barometer. Inches. 



Maximum on the 3d, 30.18 



Minimum on the 2 1st, - - - 28.89 



Mean height, - - - 29.57 



Thermometer. 



Maximum on the 28th, . - - £4* 



Minimum on the 12th and 16th, - - - 23° 



Mean height, .... 38.93° 



