Tornado in N. E.part of Ohio, Feb. A, 1842. 289 



terisk. They may perhaps be due to the increase of velocity of 

 the wind in approaching the vortex, as before remarked. 



We next proceeded to the centre of Kirtland, where we under- 

 took a similar investigation of the phenomena of the storm. Con- 

 siderable rain fell here for about ten minutes — it was mingled 

 with hail not much larger than a pea — broke some panes of glass 

 — not enough to whiten the ground. Had rained about five 

 minutes before the most violent blast came on. The high wind 

 did not last above ten minutes — the most violent blast only three 

 or four seconds. The air was filled with leaves and sticks, which 

 made it quite dark, so that it was impossible to see but a short 

 distance. It lightened three or fom' times before the blast — the 

 thunder was quite loud. The best idea of the destruction will 

 be gained by inspecting Fig. 6, Plate IV. A, was a log-house 

 blown down ; B, log-house demolished ; C, barn unroofed ; D, 

 barn unroofed ; E, barn and shop unroofed, house injured ; P, 

 north roof of barn taken, south roof uninjured ; G, house unin- 

 jured ; H, house unroofed, barn injured ; I, north roof of one 

 barn taken, entire roof of a second barn, house little injured ; 

 J, house shattered, wing entirely destroyed, barn demolished j 

 K, house demolished ; L, north roof of shop taken, shingles of 

 barn all flew off" at once like a flock of pigeons ; M, house un- 

 roofed, child two or three years old crushed by the falling of the 

 chimney, the only death occasioned by the tornado ; N, Presby- 

 terian meeting-house ; east side moved north twenty two feet, 

 the west side, having the cupola, moved twelve feet — about one 

 third of the north roof taken and otherwise badly shattered ; O, 

 north roof of house taken, two barns unroofed ; P, house un- 

 roofed ; Gi, house unroofed ; R, roof injured ; S, north roof taken, 

 and chimney blown ofl". Where the ridge run east and west 

 the north roof only was usually taken ; where the ridge run 

 north and south both were generally taken. The fact here stated 

 was found to hold generally true, that the leeward roof was taken 

 in preference to the windward one. 



The following bearings of trees were taken in crossing a forest 

 from T to U, At first few trees were found lying upon each 

 other. The bearings were N. 65° W., N. 17° W., N. 12° W., 

 N. 5° E., N. 7° E., N. 8° E., N. 10° E., N. 11° E., N. 15° E., 

 N. 15° E., N. 20° E., N. 62° E.,' N. 78° E., N. 80° E. The 

 following groups of trees lying upon each other were observed. 



Vol. xLut, No. 2.— July-Seot. 1842. 37 



