288 § Tornado in N. E. part of Ohio, Feb. 4, 1842. 
bearings would begin from the west, and end northeast or east. 
Still farther they would begin southwest, and end east or south- 
east; and upon the extreme margin the wind would blow to- 
wards southeast. All this agrees remarkably well with observa- 
tion. The house and barn H lay strewed between the directions 
N. 88° E., and 8. 50° E. 
We may now perhaps explain some of the anomalies noticed 
in the bearings on page 285. The anomaly in group third may 
perhaps be due to a more easterly motion of the whirl than at the 
fall of the fourth tree, or to the fact that being nearest the vortex 
the proper motion of the whirl was greatest, and the bearing of 
a tree consequently less influenced by the progressive motion of 
the tornado. This last cause might perhaps explain the anoma- 
lies in groups sixth and eighth. The anomaly in group four- 
teenth may perhaps require us to admit a slightly undulatory | 
motion of the vortex, such as is frequently seen in small whirl- 
winds. In group tenth also, although the rotation is uninter- 
rupted, the variety of directions seems most naturally explained 
by such a supposition. 1 think it moreover not improbable that 
the direction of the wind was materially different at differentele- 
vations above the earth’s surface upon the same vertical line, So 
that the bearing of a prostrate tree might be influenced by its 
height. age 
from their distance the trees seldom lay upon each other. Neat 
the northwest border were measured’ N. 84° E., N. 889 E; N. 
89° E., East, $. 82° E. In the vicinity FF the following ob 
servations were made. : a 
N. 67°W. 5 §N. 649W.  (N, 62°We 
N, 64 W. JN 24 W. oJ N. 70.E 
N. GE . $8. 70 W....)N.12 8 
N. 66 E. 2S. 87 E. East. 
S. 65 BE. , §N. 80 E. 
observ: tions are similar to those made near O O, and 
sa ilar anomalies, which I have marked with ap 
“ks 
