BOOK in. CHAP. Vlf. 613 



27. Heavy rains for feveral days, in courfe of this month, rentlered 

 the air fixteen degrees cooler than it was before. 



28. Nov. I I. A North, at firll fetting in this day, was obferved 

 to afte(ft moft perfons with a fenfation of unufual coohiefs; but ac- 

 tually funk the thermometer only two degrees. A very ftrong North 

 in twenty-four hours finks five to eight or more degrees lower than 

 before. 



29. Nov. 2 I. The fun fet at twenty-feven minutes part five. The 

 largeft weflern planets appeared at five minutes paft fix P. M. The 

 rednefs of the Weftern hemifphere difappeared about a quarter paft: 

 fix P. M. 



SECT. IV. 



EffeSls on Health, concomitant to the Changes of IVeathcr in this 



IJland. 



A continuance of weather unufually hot and dry, is in general 

 not unhealthy. The diforders which fometimes attend it, are 

 fevers tending to inflammation, opthalmies, pleurifies and perip- 

 neumonies, and convulfive coughs. 



This n:ate of the air is favourable to inoculation. 



A fudden change from very diy to very wet, checks the perfpirable 

 matter, and throwing it on the bowels, produces diarrhoeas, dylen- 

 teries, coughs, apoplexies, paralytic complaints, worm fevers, and 

 favours the contagion of fmall-pox, chicken-pox, and meafles. 



Wet and cool. Quotidian, or continued remitting fevers, tu- 

 mours and fwellings ; a tendency of the humours towards the 

 head. 



Warm and moift:. Diarrhoeas and dyfenteries more malignant. 

 Putrid and nervous fevers. Relaxes the folids, and caufes an afflux of 

 humours to the bowels. 



Cool and dry. Braces the folids, and difpofes to fpafmodic difor- 

 ders, as the belly-ache, tetanus, Qc. and turns the humours upon 

 the fuperior parts, the heart and breaft, producing catarrhs, quinzies, 

 coughs, pleurifies, and other diforders of the inflammatory kind. 



But a dry, fettled air, either gool or temperate, is, cateris paribus, 

 the moft healthful. 



7 A moii^ 



