344 Meteorological Journal for the year 1841. 
Art, XV.— Abstract ie a ernest anne for the pus 
kept at Marietta, Ohio, Lat. 5' N., Lam. 4° 28 
W. of Washington ites poby Bik nt M. D. 
MOMETER. BAROMETER. 
THER: fi s 
z £3 
Months. ES 2.\8% | Prevailing winds. : 
s |&\ 8 ome. gig 
o }3 - 2 3 
= Z a 2 3 lg g = & 
gS . 
zig\5| |e /8 5/8 Fara 
naary, {32.47/59} ~ 21) 3187} N. W., W., 8. W. 3 ; 
February, |33.00/57 14, 1/31 N. W., 8. W. f 
March, (42.33'80 13) 3/4 BW By BOB: 
April, 46.66 82 13) Si N., 8. W. 
May, 60.20 92 3/3 N., 8. W., 8. 
June, 75.2794 4 N., 8. W., S. 
July, 71.43 92} 3 Bij Si Wey Ne 
-}| August, 70-5390) 98S) N., 8., 8. E. 
sptember, 66.28/91 10) 3 8.5 8. Bip Np 
October, 48.44/78 13) 1) ey ee 
November, '43.20,79 10! 20! 3 wae TF 
December, (36.33 60) 1 |_| & 25) 5138 8. W., 8. Bs 
Mean, (52.18 205) 160 42.82 se 
Remarks on the year 1841. 
a 
The past year has not been remarkable for any striking changes 
in the temperature, or commotion in the elements. 
heat for the year is very near that of this climate for a series of 
years, being 52.18°. ‘The distribution varies very considerably, 
as it is divided amongst the seasons; some springs being cool, 
others warm; so also with summers and autumns, while the gen- 
eral amount varies but little in different years. The winter was 
comparatively mild, the mercury sinking below zero only on two 
’ mornings during this period. The mean is 32.519, being two de- 
grees cooler than that of 1840. There fell but eight or ten inches 
; snow at different times. The Ohio river at Marietta was 
closed only for a few days by the ice—from the 3d to the 8th of 
January, but navigation was impeded by floating ice as early as 
the 21st of December. In February, there was some severe 
weather, from the 10th to the 15th of the month. ‘The mercury 
was at 8° above zero on the morning of the 11th, and only 12° 
above at noon ; at this pened we often have the coldest weather 
in the year. ‘The Ohio > was again filled with floating ice, and 
for a few days boats Seman on: after the 20th of the month, 
