Indole-3-acetaldehydc in Plant Extracts 



55 



converted to lAA by oxidation with permanganate, silver oxide, or 

 Inclrogen peroxide, but the lAA is subject to break-down by the 

 chemicals employed. In my own previous work with neutral pea ex- 

 tracts, inorganic oxidants have failed to yield lAA in quantities that 

 could be demonstrated, but the chances may be better now that we 

 have a method to isolate lAAld from plant material by means of paper 

 chroma tography . 



