TRANSACTIONS OF T1IE SECTIONS. 
-11 
There are 27 nights of frost upon an average, while 77 nights go below zero; and 
m three years there was one day on which the temperature kept below zero all day. 
The mean degrees of frost average 600; the greatest number, 870, in 1849, and the 
least. 433, being in 1850. . 
Minim.— Length of day in this month nveruges 11 hours 42 minutes. Mean or 
pratwt heat by day 36“'135, of greatest cold by night 17 0, S5 ; difference, or solar 
"nation, 18 0, 285. . . 
Mean temperature of the month 2G°-{tS ; difference in the mean or lunar variation 
'■ The warmest year was 1840, and the coldest year was 1847, when the winds 
prvailed from the west to north. , 
1 hr barometer ranges on a mean from 30'282 ins. to 28‘9lG ins.—dilterence 
1 -fid ius.; but the full range in ten years extends to 1776 in. Mean height for 
iw month is 29-672 ios. 
. Jfl prevailing w inds are the class from west to north : the average of ten years 
‘-mg north to east 5-5, east to south 5*5, south to west 7, west to north 13 0. 
'he mem rain or melted snow is 4'39G3 ins., falling on an average on 4 nights 
* ni° da P» or a total of 14 through the month. . 
be snow falls on 11 days upon an average, and a mean depth of 2 ft. 1? in - 
'■ nrvml storm was in 1850, when it snowed 16 ius. in three days. 1 here are 
• mgbts of frost upon an average, while 2'8 nights go below zero. The mean 
; J*w of frost average 453 ; tire greatest number, 557, hi 1849, and the least, 338, 
'os? in 1846. 
, f of d “>' in tbe middle of the month 13 hours 22 minutes. Mean 
^ da >' 46 °' 24 ‘ o{ greatest cold by night 27° 63 ; difference, or solar 
^ Mean temperature of the month 36°-88 ; difference in the mean or lunar variation 
warmest year was 1843, and the coldest 1850; in the former the wind 
tbc flout h to west, and in the latter from north to east. 
I« ,LT,r tr ran S cs 0,1 a mean from 30'2703 to 29 0248 ins.- difference l 2ol5 
ft 297022 H, 8 range extcnds to 1-871 in ten years. Mean height lor the ruont 
w ' nd 3 are the class from west to north ; the average tca ?. earS 
lKS, 40 east 7 <’ east to south 3'5, south to west 7'4, west to north 11 4. 
8 4y* ™ n , 01 ' melted snow is 2-650 ins., fulling on an average on 4 nights a 
Thu 'snow fen ° f 12 ,la >’ s trough the month. , n , • , The 
Wiest** r . ^ 8 on 7 days upon an average, and a mean depth of 9i 
Thtre ar/?/ 08 , 1 ", 1862 ' w hen it snowed 121 in*. tw0 da >' 8 *. ,.. wpni helow 
-n Mights frost upon an average, and in 1844 two mg , 
the least qo f" degrecs of fr °st arc 105 ; the greatest number, 2->7, ' n 1850 ‘ 
May ’ being in 1846. 
of ,hc middle day is about 14 hours 38 minutes. Thei tero- 
t0 59 °’ 28 > Md fulfil by night to 37-63 , the solar variation is 
rj ^ n i£ rD £' ratul ' e of the month 48°-44—difference in the mean or lunar variation 
' : and ih P "‘u 1 ******* l 846, when the winds prevailed from lhe “?“ t 
H-e b»roLH° dcSt yDar was f 849, when the winds prevailed from north • 
rang0s 011 ™ average from 30*1507 to 29*2!9° ms,; the me^ 
' ."uJSSjyin but the full range in ten years is 1-947. Mean height for 
Hie i)»p, •». *9 ins. 
aurtb'tiM 8 T', Uds arc tbc tlasft f rom west t0 nor, b i 1,117 average of J ears 
. > mean r , 881 7 ’ G * cast to aouth 6-4, south to west T9, west to north 9 l- 
,Vi ^ day* 0 ? ar / n 'd.ed snow is 285)76 ins., falling on an average on 4 ^ night 
>e. and a r !° lnl °‘ through the month. The snow falls on 9 days on an 
; 4 ins in an , dc P tl1 ° r 1 inch. The heaviest storm was in 1844 ' wb .^ 
‘ - one day. There are ten nights of frost upon an average, giving 
The greatest number, 58, were in 1843, and the least 
1 * fell 0Dp e . ln 1848. 
of l ’ XE —U-nai'k montb in 1850, and once in 1852. . M 
W&° f da y '0 the middle of the month is 15 hours 20 minutes. 
tation^ 23°-3(j ^ da y d 9°'99, of greatest cold by night 46 '63 ; differen , 
