Manly Palmer Hall [P.R.S.] MS. 154. 5 folios. 200x153mm and 206x162mm. 18th Century. [This is included in the Bacstrom Collection MS. 102, Vol. 7.] Johann Friedrich Helvetius and (Brassfounder, pseud. Viervort). Observations collected from the Conversation which Dr Helvetius had with the Adept who transmuted ... into ... Translated from the German. ['translated from the German Theatrum chemicum by Roth Scholtz Vol: 1. page 492'.)