482 METEOROLOGY. 



At Loiza (going down tlie north side) it began at 4 p. ni., vvitli wind at nortli, 

 sliifting to northeast, and lasted until 10 p. m., when the wind abated, but it 

 rained heavily all the night. 



At the city of St. John's, (going down the north side,) it commenced at 4 p. 

 m., with wind from north, and lasted until 10 p. m. Here it was not severe, and 

 no damage done ; neither was there any done further down the north side of the 

 island, but there was a heavy rain, causing floods in the rivers, &c. 



At AiToyo, on the south side, it began at 4 p. m., with wind from cast, barom- 

 eter 29.09 ; at 7 p. m. barometer at 29.15, and wind changed to south, and blew 

 very hard until 9.30 p. m., when it was all over; and it does not appear to have 

 gone further down the south side of Porto Rico. 



Tlwis, the course of it seems to have been striking: 



1. Tortola, (or Peter's island,) at 9 a. m., wind from northeast; 



2. St. Thomas, 30 miles to leeward, at 10 a. m., wind northeast ; 



3. Porto Rico, east end, 28 miles to leeward, at 11 a. m., wind northeast; 

 north side, Loisa, 20 miles to leeward, at 5 p. m., wind north ; city of St. John's, 

 20 miles to leeward, at 4 p. m., wind north ; south side, AiToyo, 64 miles to lee- 

 ward, at 4 p. m., wind east, and not going further westward than St. John's on 

 the north and Arroyo on the south side ; so that it cut across Porto Rico from 

 north-northeast to south-southwest in about one-third of its length, making great 

 destruction in the trees on the mountains and in the tops of those on the plains 

 and low hills, as is to be seen and traced throughout its whole course ; and as 

 the lower two-thirds of the island were not injured by the winds, only by heavy 

 rains, it shows the tornado passed off to south-southwest, or disappeared upwards. 

 That it did not extend further to the eastward is proved by the arrival of vessels 

 at St. Thomas the nest day without their having felt it ; Avhereas, had it been a 

 hunicane, from their position they should liave felt it. So, also, a vessel bound 

 into Arroyo, and another from Arroyo to Humacao, seeing the weather look 

 threatening, stood to the south, and only had a strong northeast wind all night, 

 going into their respective ports of destination the next morning, to find there 

 had been a tornado passing over both places. 



