COUNCIL UOK 1851. 
13 
The temperature of the year 1851 was again nearly an exact 
mean 47*3. The mean for the last twenty years was 47*5. 
Since the year 1846^ the mean annual temperature of York has 
exhibited a remarkable uniformity. 
Temperature of 1846 50’00 
1847 47-80 
1848 47-50 
1849 47-05 
1850 47-00 
1851 47-30 
The month of January was 4° above a mean, and the month 
of November 5^^ below. The year like its predecessor was 
distinguished by an amount of rain considerably below a mean. 
In 1850, the total was 17*89 inches; in 1851, 20*46; the 
mean for 20 years being 24*27 inches. The month of Novem¬ 
ber seems to be losing its pluviose character. In 1844 on an 
average of 13 years November was second in amount of rain, 
July being first. The diminished quantities of the last few 
years have placed it fifth in amount of rain fallen, July still 
retaining the first place. November, 1851, appears to have 
been the coldest and the dryest November of the last 20 years. 
The pressure of the mercurial column is again about a mean, 
being 29*89 5 inches, reduced for capillarity and temperature. 
The range between the two extremes of the year was 1*786 
inches. Thunder and lightning w-ere of rare occurrence during 
the year. A heavy storm burst over the city on the 21st June, 
accompanied with *77 inch of rain, and another about the 
usual time in the first half of the month of August. The term, 
usual time, will be justified by the following statement of 
thunder storms at York in that month. 
1851, 
.. August 13, . 
. Winds. 
-03 
1850, 
• • 1 ') 
8 & 9 
„ S.W. 
1-08 
1849, 
' • 
8 & 9 
„ S.E. 
11 
1-06 
1848, 
• • u 
9 & 10 
„ w. 
11 
•07 
1847, 
not observed, probably nocte ? 
1846, 
.. August 1, 2, 7, & 13 "Wind S. 
Rain 
•63 
1845, 
• • 
9 
» E. 
11 
■95 
1844, 
• • U 
13 
„ SW. 
11 
•11 
1843, 
• • 
15 & 16 
„ w. 
>> 
1-96 
1842, 
• ’ u 
10 
1-44 
