Scientific research on brazilin and haematoxylin Contains pages of heavily-corrected draft for a paper on this topic, as well two reports entitled 'Acetyl derivatives of brazilin and haematoxylin' and 'Summary of some experiments with Acetyl-brazilins' [both undated and author unknown]. Also includes various notes by Robinson, and a proof of a paper by Robinson and F Morsingh entitled 'Synthese des Brasilins'. [20th Century]