FREE ACIDS IN WINE. 245 



easily calculate the amount of this tartaric acid from 

 the quantity of soda which remains for saturation 

 after what was necessary for the acetic acid has been 

 deducted. 



Hence we have tartaric acid C 4 H 2 O 5 , in 100 

 grammes wine expressed in milligrammes. 



Madeira 102 



Teneriffe 351 



Rhine wine 480 



Port wine 283 



Bordeaux ordinary ...... 390 



Burgundy Beaune 477 



Bordeaux Sauterne 207 



Hermitage 364 



Lachryma Christi 336 



Muscat Rivesaltes 357 



Champagne 408 



Benicarlo 545 



Roussillon 545 



St. George 414 



Narbonne 606 



Tavella 699 



Langlade 510 



Cotes White 390 



Bergerac do 448 



Burgundy Pommard 525 



So that from 2 to 7 parts perfectly free tartaric acid 

 are found in 1000 parts of wine. Tavella has the 

 largest, and Bordeaux Sauterne the smallest amount. 

 I must, however, remark that these last numbers are 

 all too high, especially in the red wines, where tannic 

 acid helps to saturate the soda solution, and where 

 besides, another acid, of which we shall speak more 

 particularly hereafter, appears in small quantities. 



