1 1 1 The Natural Hifiory Part I V* 



hotteft Months. Thefe being nothing^ 

 but a Vapour, confifting of Water;^ 

 and of fuch mineral Matter as this met? 

 with in its pafliage, and could wei| 

 bring up along with it. Which Va^ 

 pour was fent up in greater quantity 

 all the foregoing Day, than now in the 

 Evening 5 but the Sun, the^ being above 

 the Horizon, taking it at the Surface 

 of the Earth, and rapidly mounting it 

 up into the Atmofphere, it was not 

 diicernible, as ^ow it is; becaufe, thej 

 Sun being now gone off, the Vapour 

 ftagnates at and near the Earth, and 

 faturates the Air till 'tis fb thick as to^ 

 be eafily vifible therein. And when at 

 length the Heat there is fomewhat 

 further fpent, which is ufually abouti 

 the middle of the Night, it falls down 

 again in a Dew, alighting upon Herbs 

 and other Vegetables, which it che- 

 rifhes, cools, and refrefhes, after the 

 I icorching Heat of the foregoing Day. 

 But if it happens, as fomctimes it does, 

 that this Vapour bears up along with 

 it any noxious mineral Steams, it then i 

 iflafis Vegetables^ efpecially thofe which , 

 are more young and tender : blights? 

 Corn and Fruits : and is fometimes in- 

 jurious even to Men who chance to be 



then 



