270 Rotary Action of the Provident: Teena 
shown. The figure was drawn from my field notes on account of the distinct 
phenomena which were exhibited on this part of the track, and which, in cases a, 
14, 22, 21, 23, and 27, show conclusively the first action of the whist across the 
path of the axis, and sweeping towards the northern border of the track. On the 
Opposite or right side of the axis, southward of 15, there were no trees exposed, 
22 on the left side, were brought in from the more western parts of the track be- 
tween the orchard and the river, and include all the prostrations from the latter to 
Tifis’ house ; and their relative distances from the axis or center of the track are 
but approximated. 
Case 14, represents a small locust tree broken off at an old wound near the ro 
and curried outward and backward into the adjoining fallow field, having ci 
into the ground seven times in its course, leaving distinet traces. It was finally 
left at a point N. 57° W. from its stump, at the distance of forty yaa with its 
top turned southwardly, in ase ailed with its two last traces in wood so und. 
Case 10, a small locust tree was prostrated 8S, 25° W., leavin wk ite in the 
fallow ground. : was siheanhiatle shifted, by the sctarenien ana in the 
whirlwind, to 8. 11° E. 
Case a, an old ae tree with but a single branch shpat dierent from 
its trank ; this branch was taken off by the onset of the and strack into 
the ground northwest from the trunk, depositing its ale at pres spot. The limb 
bend was missing. —Case 21, apples dapdoited as in case 
se 22, a small wild gheity tree, was found lying on sid against the stump of 
14, waving first been thrown from the latter by the onset of the wind and subse- 
quently swung round by the south to its present position, as appeared by the im- 
pressions sie in the ground. Its final position was such, as if occurring at the 
outset would have prevented 14 from being carried off thwesterly.—Case 23, 
the sine ah a an apple tree was thrown west.—At b is shown the relative position 
of Tifts’ 
se aa the original position of a large pear tree, the stem of which was 
broken off and first thrown northward, where it ploughed up the soft ground of 
the garden by its force, and continued its circuit to a point northwest of its ori- 
ginal position, where it remained with its top turned toward the sou 
For the purposes of a general comparison, the observed or first 
known directions of the prostrations on the two sides of the track 
may be summed up as follows. 
Left or North side of the Track. Right or South side of the Track. 
abe ey ae ninw’rdand 
Disestionof art “basku'gdiemeoure| _, Diretionof test. "backw ri fra coe 
Case. prostration, of tornado. Case. prostr of to 
38 16 degr’s.| 29 : 5° & degr's 
39 S$ 70° E. 20 32 N. 77° E 13 
35 8. 67° E 23 30 N. 60° E 30 
1 8. 10° BE. 80 33 N. 80° E, inl: 
= ma 23° E. 6h N. 88° E 2 
45 36 “ae 0.2 
7 | 40 N..65° E. 4 
4238 N. 63° E. 27 
Mt eee Br gs aa 
fo bk RRR, SS 
