Manly Palmer Hall [P.R.S.] MS. 202. 11 folios. 206x162mm. 18th Century. [This is included in the Bacstrom Collection MS. 102, Vol. 1.] [Rhasis.] The Practice of Philosophers Copied from a Manuscript. This tract has the above title in the book entitled The Revelation of the Secret Spirit, p 37; but in the work entitled Anima Avicennae, page165 it is called The Work of Rasis explaining Avicen.