DIFFUSION AND AXIAL RATIO OF SHELLAC AND ITS CONSTITUENTS

 The values of the axial ratio. as obtained by the viscometrie method for shellac, hard resin and soft resin, are found to compare favourably with those obtained by diffusion measure­ments.

Dimensions (effective length and breadth) of shellac particles and of the constituent resins hare been calculated on the assumption that these are prolate spheroids.