Tornado in N. E. part of Ohio, Feb. 4, 1842. 285 



to be counted by thousands. We searched particularly for trees 

 crossing each other. We found but one such case on the south- 

 east half of the track, and this was near the middle. The bot- 

 tom tree fell N. 20° E. ; a second upon it N. 56° E ; a third upon 

 the second N. 84° E. We measured a number of single trees on 

 the side N N, the bearings of which were N. 3° E., N. 3° E., 

 N. 3° E., N. 14° E., N. 19° E., N. 25° E., N. 27° E., N. 30° E., 

 N. 30° E., N. 55° E., N, 55° E., N. 55° E., N. 60° E., N. 60° E. 

 The trees were not arranged in the order I have here given them, 

 but lay scattered about indiscriminately. There did not appear 

 any very decided mean difference in the bearings of the trees 

 throughout the entire space N N N. We endeavored to obtain 

 the greatest range of bearings. This appears to be 81°. From 

 the case of the trees which crossed, it may be inferred that the 

 most northerly trees are those which fell first. The mean of the 

 most northerly half is N. 14° E., of the others N. 57° E. 



On the other side of the track the phenomena were exceed- 

 ingly different. Here we had no difficulty in finding trees which 

 lay across each other, and accordingly we measured few others. 

 The following observations were made, commencing near the 

 centre of the track and proceeding towards the northwest border. 

 Fifteen groups were measured in which the trees crossed at a 

 considerable angle. The first mentioned tree in each group lay 

 at the bottom, the others above it in the order named. Five lay- 

 ers were recorded in several instances. This was by no means 

 the whole number which lay on top of each other. Frequently 

 several trees lay nearly parallel with the one observed. The ob- 

 servations are intended to include the whole range of directions. 



35°W. 

 35 E. 



rWest. 



J N. 28°W. 

 ] S. 40 E.* 

 i^N. 75 E. 



