Hurricanes and Storms of the West Indies, ^c. 321 



wind, in its rotatory movement, to be five times greater than 

 this rate of progress, which is not beyond the known velocity 

 of such winds, it will be found equal, in this period, to a rec- 

 tilineal course of 15,000 miles. The same remark applies, in 

 substance, to all the storms which are passing under our re- 

 view. What stronger evidence of the rotative action can be 

 required, than is afforded by this single consideration. 



Route No. VII. is that of an extensive gale, or hurricane, 

 ■which swept over the western Atlantic in 1830, and which was 

 encountered to the northward of the West India Islands on the 

 29th of September. It passed on a more eastern route than any 

 which we have occasion to describe, to the vicinity of the grand 

 Bank of Newfoundland, where it was found on the 2d of October, 

 having caused great damage and destruction on its widely ex- 

 tended track to the many vessels which fell on its way. Its course 

 is quite analogous to that which we have considered as having 

 been probably pursued by the hurricane of October 3. 1780. 

 The ascertained route may be estimated at 1800 miles, and the 

 average progress of the storm at 25 miles an hour. 



Route No. VIII. is that of a much smaller, but extremely 

 violent hurricane, which was encountered off Turks* Island on 

 the 1st of September 1821 ; to the northward of the Bahamas 

 and near the latitude of 30° on the 2d ; and on the coast of the 

 Carolinas early in the morning of the 3d ; and from thence, 

 in the course of that day, along the sea-coast to New York and 

 Long Island, and which, on the night following, continued its 

 course across the states of Connecticut, Massachussets, New 

 Hampshire, and Maine. We are not in possession of accounts 

 by which its farther px-ogress can be successfully traced.* The 

 diameter of this storm appears not to have greatly exceeded 

 100 miles ; its ascertained route and progress, is about 1800 

 miles in 60 hours ; equal to 30 miles an hour. 



The last mentioned route may also be considered to be near- 

 ly the same as that of a similar, but less violent storm, which 

 swept along the same portion of the coast of the United States 

 on the 28th of April 1835. 



• The phenomena and progress of this storm have been more fully noticed 

 in Silliman's Journal, vol. xx. pp. 24-27. 



