230 Proceedings of the Royal Society of Victoria. 



The question arises as to whether the reduction of the KMnOj 

 will continue even after all the sugar can reasonably be assumed 

 to have been oxidised. According to Morse and Reese {/oc. cit.) 

 the action should not stop until all the KMn04 has been decolor- 

 ized, and even then the MnOo itself should Ijegin to lose oxygen. 



My experiments (Table V.) bear out this view as far as they 



go- 

 In Experiment 1 no organic reducing agent was present. 



Table V. 



SOccs.^KMnO^ were employed in each experiment. 



