THE BAVARIAN PROCESS. 327 



they are treated in a manner exactly similar to wine during its 

 ripening. 



A gentle diffusion of air takes place through the pores of the 

 wood, but the quantity of azotized substances being very great 

 in proportion to the oxygen which enters, they consume it, and 

 prevent its union with the alcohol. But the beer treated in this 

 way does not keep for two months without acidifying, if it be 

 placod Li smaller vessels, to which free access of the air is 

 permitted. 



