^(^6 ESSAYS AND OBSERVATIONS 



ounces of it into a retort, and poured ia 

 one ounce of oil of vitriol, and as much 

 water. In the dirtillation, the receiver 

 was filled with white fumes, which con- 

 denfed into a liquor of a pale colour, 

 fomewhat turbid at firft, of which 1 had 

 near three ounces. The liquor had all 

 the appearances of the fpirit diflilled in 

 Glauber's manner, from common fea-falt ; 

 and, when fume of it was dropt into the 

 Solutions both of filver and quick-filver, 

 it turned them boih miiky, and made a 

 white precipitation From all which I 

 have no difficulty to conclude, that the 

 acid contained in crude fal ammoniac is 

 of the muriatic kind, or the fame which 

 is produced from lea fait, But whence 

 this acid fhould proceed, is a matter of 

 greater intricacy ; iince we are afTured that 

 no fea- fait is neceffiry to, nor employed 

 in, the preparation of that fal- ammoniac 

 which is brought to us from Egypt. 



Th IS quel\ion I fhall not undertake to 

 difcufs, as being foreign to my prefent 

 purpofe ; but fliall fubjoin fome remarks 

 on the experiments above related, or de- 

 duce 



