Note 656 — Chapter XLV

Berthelot (1893) I, 234, took the date to be 1182 A. D. and so, on the basis of this remark, placed the introduction of Arabic alchemy into Latin learning 38 years too late. It is rather amusing that Lippmann, who elsewhere avails himself of petty pretexts to belittle the work of Berthelot, should have overlooked this error. He still (1919), pp. 358 and 482, states the date as 1182 A. D., although he is puzzled how to reconcile it with that of 1143 A. D. for Robertus Castrensis or Robert de Retines. He also is at a loss as to the identity of this Robert or the meaning of “Castrensis,” and has no knowledge of the publications of Karpinski (1915) and Haskins, EHR (1915).