I JO Augufi i749» 



which the clouts are made wet. And 

 though the bottles fliould be hung up in 

 the liinfhine, the above way of proceed- 

 ing will always have the fame efFed: *. 



Aiigiiji the 1 6th. The occidental Ar- 

 bor vit^-f, is a tree which grows very 

 plentiful in Canada, but not much further 

 fouth. The moft foutherly place I have 

 ittn it in, is a place a little on the fouth 

 iide of Saratoga, in the province of New- 

 Torky and likewife near Cajfes, in the fame 

 province, which places are in forty-two 

 degrees and ten minutes north latitude. 



Mr. Bartram, however, informed me, 

 that he had found a fingle tree of this kind 

 in Virginia, near the falls in the river Jajnes. 

 Dodor Coiden likewife aiTerted, that he had 

 feen it in many places round his feat Cold- 



ingham, 



* It has been obferved by feveral experiments, that any 

 liquor dipt into another liquor, and then expofed into the 

 air for evaporation, will get a remarkable degree of cold ; 

 the quicker the evaporation fucceeds, after repeated dip- 

 pings, the greater is the cold. Therefore fpirit of wine 

 evaporating quicker than water, cools more than water; 

 and fpirit offal ammoniac, made by quick-lime, being flill 

 more volatile than fpirit of wine, its cooling quality is ftill 

 greater. The evaporation fucceeds better by moving the 

 vefTel containing the liquor, by expofing it to the air, and 

 by blowing upon it, or ufing a pair of bellows. See de 

 Mairafi, Dijfeitation fur la Glace, Prof. Richman in No'v, 

 Comment. Petrop. ad an. 1 747? & 1748' P- 284. and Dr. 

 CulUn in the Edinburgh phyjical and literary EJfays and Qhftr- 

 njations. Vol. II. p. 145. F. 



f T.hiija Qccidentalii, Linn. 



