202 Meteorological Journal at Marietta, Ohio, for 1845. 
\ 
2d. The line drawn through the verter of the cone and the 
focus of any one parabola, will pass through the foci of all others 
cut from the same cone by planes parallel to the same element. 
If the line Cm” be revolved around the axis of the cone, it 
will generate the surface of anew cone, which surface will be 
the locus of the foci of all the parabolas which can be cut from 
the given cone by planes parallel to any element. 
Miami University, Oxford, (Ohio,) ae: 1845. 
yen Vi.—Abstract of a pr peat es Journal, _ _ year 
1845, kept at Marietta, Ohio, Lat. 39° 25’ N . 49:28/ 
» W. of Washington City; by S. P. Hitprern, M. ty 
ie ica oan J BAROMETER. 
5 
= ; 
MONTHS, 3 ae é 4 | Prevailing winds. F f 
2 B13 | 3s 
s (Bi elele| 33 eile 
g £)5)3) 3s 2184 
a) | BS bee | Boke = a | 
January, - —§ - (37-10) 58) 2 2] S. W., N. W. -83/29°10) - 
naira - (38:3) 1( W., N. W. )75)29-05) - 
March, - - (43:5 1 14) 2 N.W., N )-80 29-08) - 
April, - - [584 1 2 W.,N. W.,N 1-70 29-35 
ay, - = (59-7 3 N.,N.W.,'8. W )70) 29-38) * 
June, - . 69-7: d 13) € Ss. W., 8. E )-65| 29-23) 
July, =" See ied 4 8. W., N.,N.W 55 29-20, 
August, - - (71-17) 90| 52) § ‘ 8. W., 3. 65/29:25 
September, - [63% 40} § 4 $. W.,N. pede 
tober, - - (50-74) 76) 23) 25) 6 2- 5. W.,N. 96,29-25) “4 
Novembe - |4210| 73) 1 13)'s 8. W.) W., N. W +8089 18 € 
December, - 25-4 45) ~ 14\ 1 W.,N.W;, )-72 29-18) “« as 
Mean, 52-73! 236129 33-0 
Remarks on the year 1845.—The year which has just closed 
will long be remembered in the annals of Ohio, for the cold dry- 
ing winds and late frosts which attended the spring months, and 
the excessive drouth of the summer ; especially over the central 
and northern portions of the State. ‘At Marietta, from the 10th 
of March to the 22d of April, there fell less than two-twelfths of 
an inch of rain; while the cold drying winds from the west and 
the northwest, served to evaporate, with great rapidity, the 
moisture which usually saturates the earth from the rains of the 
latter part of winter and early spring. The effect of these cold 
drying winds on the meadows and pastures was very injurious, 
checking the growth of the grasses and shrivelling their roots, 
