"VORTICAL INCLINATION OF THE STORM WIND.--By this is meant some degree of involution from a true circular course. In the New England storm above referred to, this convergence of the surface-winds appeared equal to an average of about 6 deg. from a circle. In the present case, such indication seems more or less apparent in the arrows on the storm figures of the several charts, where the concentrical circle afford us means for a just comparison of the general course of wind which is approximately shown by the several observations. "Perhaps we may estimate the average of the vorticose convergence, as observed in the entire storm for three successive days, at from 5 deg. to 10 deg.--out of the 90 deg. which would be requisite for a congeries of _centripetal_ or center-blowing winds. This rough estimate of the degree of involution is founded only on a bird's-eye view of the plotted observations. But, however estimated, this involution seems to afford a measure of the air and vapor which finds its way to a _higher elevation_ by means of the vortical movement in the body of the storm." If the elevation of the air at the borders of the storm, and depression in the middle, resulted from the outward tendency and "lateral movement" of the revolving air, and from the _centrifugal force_, as in the experiment with the water in a cylindrical vessel, as stated in the first paragraph quoted, an _involution_ of from 5 deg. to 10 deg. from the action of a _centripetal force_, must carry the air _inward_, and the _barometer should stand highest in the middle of the storm_. The change is fatal to his theory. The two are diametrically opposite in character and effect. In one, the superior strata would be brought down in the center by the _lateral pressure outward_; in the other, they would be elevated by the _involution_, which "affords a measure of the air and vapor which finds its way to a higher elevation," etc. It is perfectly obvious Mr. Redfield has refuted his own hypothesis. In doing this, he is met by the other difficulty alluded to, which he does not attempt to explain. This gathering of the air inward, spirally, by a centripetal force, if it took place, not only would not depress, but _must elevate the barometer in the center, above that of the adjoining atmosphere_. When he first attributed the depression of the barometer to a lateral movement and centrifugal force, he supposed the superior strata descended into the depression, and their frigidity occasioned the condensation, and cloud, and rain. How he now proposes to account for the formation of cloud and rain during storms, while the warm air of the inferior stratum finds its way to a higher elevation in the center of the storm, he does not inform us, and we must wait his time.