“…Although the abundant quantity of bound auxin obtained from maize endosperm was thought to have little physiological importance [Yamaki & Nakamura (226)], the liberation of IAA by hot alkali from ascorbigen (160,161) [considered to be important physiologically (10, 107, 110, 209»), the new cold alkali technique used by Bentley to examine certain interconvert ible auxins (15,16), and the active state of auxin found in wheat root [Frans son (65)], would appear to open up new lines whereby the generalisation of Yamaki & Nakamura can be subjected to further tests.…”