Kdzu Publications. 375 



rind forne of them applicable to the arts, in order that thefe 

 difcoveries may not remain altogether ufelefs. It is to be 

 wifhed alio, when the properties of this new earth fhall be 

 better known, that chemills may give themfelves the trouble 

 to change the name of yttria, by which it is now known, and 

 which is derived from Ytterloy, the place where it is found, 

 that another derived from its eifential properties may be given 

 to it. 



I fhall conclude with remarking the great difference be- 

 tween the refult of M. Ekebcrg's analyfis and mine. I do 

 mot know exactly to what it is owing, but I can affert that, 

 in five analvfes which I made of this ftone by different pro- 

 cefies, I never had Ids than 12 of lofs. I prefume that a 

 certain quantity of moifture, and perhaps carbonic acid, re- 

 mained in the new earth obtained by M. Ekeberg, for it is 

 chiefly in this point that we differ. He found 47,5, and 1 

 only from 34 to 35, becaufe I calcined it more ftrongly. 



NEW PUBLICATIONS. 



. '/ 3Li7!?icrl cf a Coi/rfe of Chemijlry • or, a Series of Experi- 

 ments and lllujlrations nccejfary to form a complete Coiirfe 

 of that Science. By J. B. Bouillon Lagrange, 

 Profejjbr in the Central Schools of Paris, &c. Tranflated 

 from the French, with 17 Plates. 2 Vols. 18 Shillings. 

 Cuthel, and Veraor and Hood, 1800. 



I 



[Contiaucd from Page zSz.] 



N our laft we announced the publication of this ufefnl 

 work, and promifed a few extracts. We now fubjoin the 

 following. 



Citric Acid [Concrete juice of lemons] . 

 Scheele was the firft perfon who found means to obtain 

 the citric acid cryftallizetl, and well feparatcd from the mu- 

 cilage, which accompanies it in the juices of thofe fruits that 

 furniih it. 



The procefs for obtaining this acid, according to that che- 



11 lift, is as follows: Jjcprefs the juice of lemons, and leave it 



Z C i at 



