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II. Quantity of Wood Vinegar 



In charcoal burning, unlike dry distillation of wood, the constant 

 influx of a limited supply of air is allowed within the kiln to cause 

 imperfect oxidation and the subsequent formation of charcoal. Certainly 

 a stronger oxidation goes on in charcoal burning than in dry distillation 

 and for this reason, weaker vinegar is obtained through charcoal burning 

 than through dry distillation. Moreover the green wood, which is used 

 to produce the good charcoal, supplies a greater amount of moisture thus 

 affecting the quality of the vinegar. The following are the results of 

 different experiments tried on different tree species with different types 

 of kiln. 



1. Outside Kiln Extinction Method 



2. Inside Kiln Extinction Method 

 a. Sakura Kiln (a) 



