Facts for a History of the Gallic Acid. 29 



statues of massive gold which were in this temple. As to 

 the quadrigs, It seems ihey were always gilded when yoked 

 to the chariot of the Sun, in order that the luslre of the gold 

 might imitate the splendour of that orb. The four horses 

 seen at Constantinople harnessed to the chariot of the Sun, 

 were also gilded. The island of Rhodes adored this divinity, 

 whose worship naturally extended to the other islands of the 

 Ionian Sea; and it is very probable that the four horses 

 which now decorate the palace of the Thuilleries were for- 

 merly yoked to the car and statue of the Sun. 



[To be coniinueJ.J 



VI. Facts for a Hiitory of the Gallic Acid. By 

 M. Bouillon -Lagrange. 



[Couciuded from vol. xxviii. p. 297.] 



Exmnination of the Action of Caloric and JVater upon 

 Gall-juits. 



Action of Caloric. — M. Dcyeux having examined, in a 

 particular manner, all the products of distillation of gall- 

 nuts in the open fire, I only considered the acid liquoi* ob- 

 tainc-d from this substance. 



This operation was conducted in the manner pointed out 

 hy this chemist : the liquor of the receiver was aromatic, a 

 little milky, very ac d ; did not precipitate glue, and gave 

 with the sulphate of iron a violet blue passing to the dirtv 

 green. Lime and barytes yielded a colour of pea blossoms. 

 The nitrate of mercury formed a blackish precipitate in it j 

 it was white with the acetate of lead and the muriate of tin. 



I saturated the acid liquor with potash ; I obtained by 

 evaporation a brown empyrcumatic matter, which by the 

 addition of the sulphuric acid exhaled a pungent smell ana- 

 logous to that of the acetic acid. 



Action of I Vat er upon Gall-jiuls. — I shakcd, for four mi- 

 nutes, gall-nuts in fine powder and in cold water; the li- 

 quor, after having been filtered, was of a golden yellow co- 

 lour: one part was distilled in a reiort placed in a sand-bath, 

 tUc other was saturated by means of the carbonate of 5oda. 



The 



