ARTIFICIAL CAMPHOR. 137 



A folution of cry ftallized carbonate of foda produced a flight and of carbonate 

 effervefcence in it, difcoloured it, rendered it lighter, and 

 formed muriate of foda. 



This mtiriated oil, diftilled to drynefs in a Suitable appara- Products by its 

 tus, yielded fome muriatic gas, fome drops of thick oil, fimilar 

 to that mentioned above, a very light and very comhuftible 

 perfumed liquid, which comported itfelf with water, alcohol, 

 fulphuric acid, and foda, in ihe fame manner as before diftii- 

 lation; there was only lefs muriatic acid in it. , The refiduc 

 w^as a black matter, glutinous like pitch, diffolving imperfectly 

 in alcohol, and yielding muriatic acid to water. 



We afterwards made a mixture of equal parts of oil of tur- Mutual aftion of 

 pentine and muriatic acid at 25°. We agitated it from time to 0,f , of tm P entil " 



- • r ,,.„ and muriatic 



time, and then left it for feveral days. The oi! took a reddifh ac jd produces a 

 brown colour, the acid alfo became reddifh: both of them fm;i ' 1 quantity 

 preferved their tranfparence, and at the point of contact of body# 

 thefe two liquids, was perceived a concrete ftralum, having 

 feveral of the properties of camphor, but its quantity was (o 

 fmall that we were obliged to neglect it. 



A fact of this kind is to be met with in the tranflation Previous dif- 

 of the Chemical Recreations of Model, publifhed in 1774, by JgfT of this 

 M. Parmentier. 



This philofopher expreffes himfelf as follows, in page 400 

 of the firft volume of this tranflation, in the additions which he 

 has made to it : 



" A very curious and very interefiing observation to natural 

 philofophy and chemifiry, is, that M. Marges, furgeon, in a 

 work, the object of which is the examination and chemical 

 analyfis of different medicaments *, fays, that he obtained, 

 from the digeftion of a mixture of fuming marine acid and oil 

 of turpentine, fmall faline concretions, which at the end of a 

 certain time, became more confiderable, and took the figure 

 of a cryilalline fait, in form of a parallelopipedon, while the 

 oil which (warn above them was coloured red, and acquired 

 a very thick confidence, &c. 



It is very probable that thefe cryfrals were the fame as thofe 

 which were obtained in fuch great abundance from the action 

 of the fame gazeous acid. 



The fame oil was Saturated with oxigenated muriatic acid Oxigenated mu- 

 riatic acid gas 



• Paris, 1774. Second edition. and oil of tur- 



pentine, 

 gas; 



