326 



Cellulose 



and beech-wood (Doree and Cunningham, J. Chem. Soc. 103, 

 685, 1913), and as an independent criticism we reproduce it 

 in extenso, preceded by the table of statistical results of the 

 investigations. 



Calculated as yielded by too grms. of the product. 

 Calculated as yielded by 100 grms. of original material. 



The Nature of the Action of Ozone on Lignocellulose. 



The experimental work on jute and beech has resulted in 

 the following observations of which an explanation must be 

 sought. 



(1) Ozone has practically no action on the dry substance. 

 In anhydrous media the action is one of slow oxidation. 



(2) In the presence of water there is a rapid initial develop- 

 ment of acid products, followed by a fall in the production to 

 pne-tenth of the former value in the case of beech. 



(3) Carbon dioxide is produced throughout, the decrease in 

 the rate of production after six hours being small. 



(4) Volatile acids, namely, 2 -6 p.ct. (beech) and 2-5, 5-5, 

 and 3-5 p.ct. (jute), calculated as acetic acid, are obtained on 



