270 CARBONIC ACID. 



Q. How is CARBONIC ACID GAS produced by 



FERMENTATION ? 



A. Malt and fruit both contain sugar; 

 and sugar consists of carbon, oxygen, 

 and hydrogen. In fermentation, a part 

 of the carbon and oxygen of the sugar 

 escape, in the form of carbonic acid gas. 



Carbonic acid gas is a compound of carbon and 

 oxygen, in the following proportions : 3 ffis. of carbon 

 and 8 Ibs. of oxygen will form 11 fts. of carbonic acid 

 gas. Now, 100 Ibs. of white sugar contains 43 Ibs. of 

 carbon; 50 Ibs. of oxygen; and 7 Ibs. of hydrogen. 



Q. How is AL'COHOL produced by FERMENTA- 

 TION? 



A. The hydrogen of the sugar com- 

 bines with the residue of the oxygen and 

 carbon to form "AL'COHOL." 



Q. What is AL'COHOL ? 

 A. Al'cohol is the spirit of wine or 

 beer, obtained by fermentation. 



(100 gallons of alcohol consist of 38 gallons of 

 oxygen; 43J of carbon; 15 of hydrogen; and 3 of 

 nitrogen.) 



Q. Will) IS BARLEY MALTED ? 



A. Because germination is produced 

 by the artificial heat; and in germination 

 the starch of the grain is converted into 

 sugar. 



