eS ee 
Meteorological Journal at Marietta, Ohio, for 1843. 277 
a F IMB 2-103 
Art. VII.— Abstract of a Meteorological Journal, Jor the year 
1843, kept.at Marietta, Ohio, Lat. 39° 25’ N., Long, 4° 29” 
W. of Washington City; by S. P. Hiprern, M.D. 
ve 
T. 7 | = |__ BAROMETER, 
galt 4. Fl 
ee ee 
MONTHS. re | = H Prevailing winds. ‘ 
i i. Rie gE} ¢ 
= ae 8 ; = FI =] * 
Pals) 2/e| eh 12) 219] 
a (S/S) ole |S) 3 jue 
37-00. 8 14) 17) 1 29°30 28 95 “85 
26 66) 2| 14) 14) 24 '29-60/28'80' -80) 
28 25) 0| 14) 17).3-7 '29:60/29-10, +50) 
51°30 84) Q1/ 11) 19 4-78 '29:50,28 98. -52 
60-78) 20) 11) 26 60:29:05, -55, 
68-48) 90) 34) 23, 7 4-21 68 29:20, -48) 
7266, 92 49| 95 6 1-33 29°70 29-35) -35| 
72°33, 87) 50) 23/ 8 1-91 66 29-45) -21 
6854) 89) 49) 15] 15, 9-25 29-35, -40 
33,75, 22, 13) 18 4 10-7 
39:93, 67, 18) _9| 21, 263 15| - 
35-00 6| 12) 19, 258 18, “82 
50-77 193'172 41-76 zs 
Remarks on the year 1843.—Although there canne a accord- 
ing to the present arrangement of the seasons, .be any very great 
difference in the mean temperature of different years, the laws. 
climate forbidding any wide departure from this rule; yet from ; 7 
Various causes there is in many years a striking difference in the 
temperature, especially as applied to the seasons. This variety 
most generally arises from the course of the winds, and from the 
greater or less amount of rain; but much more from the winds 
than from any other source. Next to the winds, the amount of 
cloudy weather has considerable influence, by the obstruction 
this state of the atmosphere opposes to the rays of light and heat 
» ftom the sun. The past year has been attended with a larger 
_ amount of westerly and northerly wirids than usual, and also with 
greater number of cloudy days. From both these sources we 
may perhaps account for the low mean annual temperature of this 
Year, being more than two degrees less than the usual amount for 
this climate, that of 1843 being only 50°-77; the years 1835, 
1836 and 1838 were also remarkable for their low temperature. 
The mean for the winter months is 32°-33, which is four de- 
tees less than that of the year 1842. The winter of 1843 set in 
