THE PLANT OXIDASES 



243 



BUNZEL'S OXIDASE APPARATUS. 



For detailed descriptions of the electrically heated 

 thermostat and of the shaking apparatus used, reference 

 should be made to the original papers. Since the principle 

 of the method can most readily be grasped by one ac- 

 quainted with the oxygen absorption flask, it is figured 

 here. 



FIG. 24. BUNZEL'S OXIDASE APPARATUS. 



The volume of the interior of the apparatus is about 

 150 c.c., and in the latest form is divided into three com- 

 partments, A, B, C, by the grooves D and E. The earlier 

 apparatus had only two compartments, but the risk of 

 accidental and premature mixing of the liquids is mini- 

 mized by the extra division. Opening into A is a burette, 



