Rotary Action of the Providence Tornado. 269 
the right, as relates to the center of the tornado. But this build- 
ing having received its motion by yielding to the wind, shows 
the true course of the latter as whirling to the left. 
' Passing by the prostration of the range of buildings near the 
river, described by Mr. Allen, I proceed to notice the effects which 
appeared on crossing to the Massachusetts side. 
From the bank of the river to the house of Abraham Tifts on 
the Lyon farm, three fourths of a mile, the grounds were open 
and unbroken, being mostly under cultivation and with few trees 
exposed to the tornado, excepting an orchard of scattered apple 
trees westward of Tifts’ house. The traces of the wind in and 
adjacent to this orchard were very distinct in their character, and 
I subjoin here the sketch on which they are represented. 
Fig. HT. " Providence Tornado. 
North or left side. 
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South or right side. 
Expraxatroxs or Fre. HI.—The cases of prostration 4 to 14, were ftom a line 
of small locust trees on the west border of an old apple orchard, and are severally 
shified a little out of line for the sake of a distinct exhibition of their directions. 
From thence to near Tifts’ house at 5, the ground is but sli d, 
and the relative positions of each tree, on the left of the centre, is approximately 
