278 Tornado in N. E. part of Ohio, Feb. 4, 1842. 
resented in the figure. On the left — Fig. VI. Providence Tornado. 
side, however, every post was pros- 
trated westwardly, and the rails 
were likewise blown slightly back- : ey 
ward toward 4, in the same general is a 
direction. The scale of feet, which Pe ‘ 
bi--« | UoUrse 1 ae 
measures across the track, was ob- ae ee 
tained by estimating twelve feet to t ees i i 
each length of the rails. The lo- fo a 
cality of this sketch was perhaps a 4 apage:> e anise 
mile eastward of the Lyon farm. a4 aby 
‘The application of the foregoing A Bi * 
views of rotation to this case, it can a~ 3 
hardly be necessary to point out. 
I have noticed many effects of similar kind on fences ; but that 
the backward prostration on the left side of the track should have 
taken full effect in this case, and mainly, perhaps, under the sec- 
ond quadrant, I ascribe to the age and general weakness of the 
etice. 
Additional memorials might here be adduced in evidence, and 
of similar character to the foregoing; but having already occu- 
pied more space than I intended, I must now leave the question 
of a general whirlwind rotation in this and other tornadoes to the 
candid consideration of impartial ‘inquirers. 
New York, July 12, 1842. 
Arr. IIlL—On a Tornado which passed over Mayfield, Ohio, 
February Ath, 1842, with some notices of other Tornadoes ; 
~ by Extas Lota, Professor of Mathematics and Natural Phi- 
losophy in Western Reserve College. 
(Communicated to the Conn. Acad. of Arts and Sciences, April 28, 1842.) 
Ow the 4th of February, 1842, between four and five o’clock, 
P. M., a tornado of destructive violence was experienced in the 
-horthea: ern part of Ohio. It commenced near the south line z 
ship of Mayfield, in latitude 41° 31’ N., longitude 81 
, and pursued a course N. 334° E. for abatit twenty four 
miles; when meeting Lake Erie, it left no further traces of 
its progress. A more distinct idea of its course may be formed 
