Meteorological Observations at Marietia, Ohio. 
237 
Arr. XXIIl.— Abstract of Meteorolozial Observations, made at 
Marietta, Ohio, in Lat. 39° 25’, West Long. 4° 30’ from Wash- 
ington City, for the year 1851; by S. P. Hitprern, M.D. 
} _ THERMOMETER. ae BAROMETER. 
e lag ae 
$ | be 3 
2 | 82 |. | 88 : 
MONTHS, i 38 ‘ al a ES % 3 Winds. : ~ | 
Pal SE eles |e ee Ae ere 
gs| 2 iaizie| 2/5 ele ei 4 
— |= | 2 | a2 & |S |in.100 Sf ie | 
January 34°33)35-20 64 /-4) 25° 6 0-50 s., s. w. & w. 30-03 28-80 1°23 29-41 
February, 40-70/41-50 66) 2 17| 4-88)s.,s. w. & Hero 05;28 6) 0029-45 
March, - 46-33/47-2078.20, 21| 10) 1-44s.,s. 5. & ¥, 29-55/29-00) -55 29-28 
April, =~ (52°33)51-83.80.28, 18) 12) 3-04'y., w., & s. B.29-75/28-70 1-05 29-23 
May, - 61-572 47136 28 12) 6-00's. w., n. & . 29-75'29-12, -63 29-44 
June, = — |69-00)70-60/88'46| 22} 8 2-60s. s. w. & N. 29-70/29-00) -70.29-33 
Joly, <= , 17293 72-83 94 52) 92} 9| 2-40] w., s. & w. 29-55/29-20) -35,29-35 
August, - — |70-27/72-25'8748) 23} 8} 3:60, N. d& s. —[29-68/29-25) -43,29-47 
September,  |66- |68°50/96 40) § 5| 2-38) s., 8. B. & w. '29-8029-15, -65/29-47 
October, 52-33/53-15/81 28) 11 1:68. 8. x, & w. 29-60/29-00 -60 29-30 
November, [39 54/40-00.71 18 18, 4-00| x. & w. —29:80/29-90 £90 29°35 
December, [28-00|28-00/65-3 |:2-42'\w., s. x. & w.29-80'29-08) -72'29-44 
Mean for year, 0275-53-62 «(7 |B 44 : 
THE mean tem 
52°-75, which is about as usual. 
perature for the year which has just closed is 
he amount of rain has been 
considerably less than the annual mean for this climate, which 
Is about 42 inches, (but rising occasionally to 53 or 54 inches, ) 
Whereas this year it 
was only 
inches, 
The years 1834, 
— and 1845, as well as 1851, were remarkable for the dimin- 
ed amount of rain. 
The month o 
cember, as mi 
€xpected from the short days and lengthened nights, is our cold- 
€st month, and this year has been remarkably severe. 
Pitulation of the history of this month for the past twenty-five 
ht be 
> 
a- 
ears, as showing its bearing on the navigation of the Ohio river, 
may be valuable and interesting in this day of railroad improve- 
tents ; especially as there is now a road in preparation from Cin- 
“innati to Pittsburgh, along the northern border of the river, pur- 
suing its general direction, a few miles from its waters, which 
will obviate the serious difficulties now felt from the obstructions 
to navigation b 
in the winter, viz. : 
y low water in the summer and autumn, and ice 
December, 1825.—Nearly as cold as this year; river closed the 
20th of the month; snow a foot deep on the 19th; 6° below 
«, J2r0.on the 22d; mean tem 
1826.—Ohio closed the 27th 
n temperature of that month 31°42. 
-—Ohio river open all winter; mean 
mea 
%. 183 
to 30th 
perature 29°°33. 
January following ; 
ey 
