292 IKCOMBUSTIELE CONSTITUENTS. 



Ib will not be superfluous to subjoin here, what has 

 been already stated respecting the inorganic consti- 

 tuents of wine. 



And first, I may observe that every analysis has 

 tended to prove that potash, soda, lime, magnesia, 

 sulphuric, phosphoric, and silicic acid, and chlorine 

 are contained in every wine, and iron in a good many. 

 We have already spoken of alumina (p. 26). 



Curiously enough, Paure, Filhol and others have 

 classed the organic constituents with the inorganic 

 acids. 



The largest amount of salts present in 1000 

 grammes of wine of the Grironde is, according to 

 Paure : 



In red wine. In white wine. 



Bitartrate of potass . . 0'66 1 "97 



Tartrate of lime . . . 0'06 O24 



Tartrate of alumina . . 0*26 0'71 



iron . . . O'lO 0'29 



Chloride of sodium . . O'OO 0'14 



potassium . O'OO (HO 



Sulphate of potass . . Oil 0'26 



Phosphate of alumina . (V004 0'04 



It is better at once to acknowledge that we can 

 attain no certain results with respect to the grouping 

 of such complex mixtures. Still greater uncertainty 

 prevails as to grouping the constituents of the ash, 

 which are otherwise of no importance, as far as a 

 knowledge of wine is concerned. 



The sum of all incombustible ingredients taken 

 collectively, from which the carbonic acid produced 



