154 Mr Lawson on the Trade-Winds at Barbadoes. 



very slight. The moon passed the inferior meridian about 

 3 A.M. on the 19th, with a declination of 22° S. ; and her in- 

 fluence (19) is perceptible in the disappearance of the regular 

 trade by 9 A.M., and the substitution of a fresh SE. wind. 

 This, in its turn, disappeared towards 3 P.M., being succeeded 

 by the trade from ENE., which, by 9 A.M., had backed to N. 

 Much the same series of changes occurred on the 20th, the 

 wind veering from ENE. at 5 a.m. to E. at 9, and freshen- 

 ing, and to SE. at 3 P.sr. ; while the diminution of force at 

 the last hour, with the intermixture of currents at some ele- 

 vation, and the subsequent backing to NE. by 9 P.M., suffi- 

 ciently indicate the influence of the attraction of the sun and 

 moon, and of the calorific power of the former, to restore the 

 trade-wind. On the 21st, almost completely the same was 

 observed ; the wind veering from NE. at 5 A.M. to SE. at 

 9, and freshening ; and continuing there at 3 P.M., though 

 then the opposite currents began to appear, which, by 9, had 

 again supplanted the SE. wind, when the regular trade i*e- 

 sumed its course. 



P.S. — As the above was about to pass from ray hands, I 

 fell Avith the 2d ed. of Mr Howard's Climate of London ; and 

 it is but justice to that gentleman to state, that, in it, the 

 probability of the winds at the equator being afl"ected by the 

 moon's declination is pointed out (vol. i., p. 200,) and the 

 conversion of SW. into NW. winds explicitly stated (ibid., 

 p. 201-2.) 



(To be continued.) 



