248 SOME RECENT RESEARCHES IN PLANT PHYSIOLOGY 



TYPICAL ESTIMATION BY BUNZEL'S METHOD. 

 As an illustration of the method, the following table may 

 be quoted. It contains the results obtained with con- 

 centrations of pyrogallol varying from 2-5 to 10 per cent. 

 This range was extended in another table. The numbers 

 at the top of the columns refer to the various flasks, which 

 differed somewhat in volume. 



TABLE LVIII. 



MANOMETER READINGS EXPRESSED IN CENTIMETRES OF MERCURY 

 IN APPARATUS. 



* Pyrogallol solution splashed into bulb. 



Bunzel applied his method to the examination of oxidase 

 content in pathological conditions of beet leaves. This 

 subject will be discussed later. 



