Mr LawRon on the Trade-JFinds of Barhadoes. 379 



*< From tho direction in which the cocoa-nut and other 

 trees were prostrated next to the earth, the first that fell 

 must have been blown down by a north-north-east wind; 

 but far the greater number were rooted up by a blast from 

 the north-west." * 



71. The state of the barometer during the hurricane, ac- 

 cording to Lieutenant Bynn, fort-adjutant at Barbadoes, 

 was on 



August 10th at 8 P. M. 30-00 in. 

 llth.^. 2 A.M. 29-40. 



4 ••• supposed to be under 28-OO.t 



These, however, lose much of their interest from the ab- 

 sence of the mean height of the barometer, and of any no- 

 tice as to the nature of the particular instrument. 



72. On the 10th August 1831, the sun's declination, on the 

 superior meridian at Barbadoes, was 15° 41' N. ; the moon's 

 declination on the same b"" T N., and her hour of transit 2** 

 27™ P. M. Now, according to the principles noticed in the 

 first part of this communication, the sun and moon passing 

 the inferior meridian, with a northern declination, would 

 accelerate the trade-wind, while they checked the upper cur- 

 rent from the SW. ; and, as the sun approached the supe- 

 rior meridian, his declination being greater than the lati- 

 tude of the place (Barbadoes lies between 13° and 13^° N.), 

 as soon as his heat began to aifect the air decidedly, that 

 would have a tendency to rise irom the earth's surface at a 

 more northerly point, and there join the currents returning 

 to the northward, and, consequently, all that portion of the 

 trade which was to the southward of this point would either 

 simply have its southerly motion gradually stopped, or it 

 might have it more or less reversed, and flow back from the 

 ESE. SE. or even S. Again, the moon passing the superior 

 meridian with a declination of 5° 7' N. only about 2^ hours 

 after the sun, would cause a flow of air to those points 

 through the zenith of which she passed, and tend to re- 

 establish the trade-wind (19, 32, 50) ; but it is obvious that 



* Reid on the Law of Storms, 2d edit., &c., p. 29-32. 

 t Ibid. p. 37. 



