Butler's Hudibras. [Grey's notes to part I., _passim._]

Memoirs of Extraordinary Popular Delusions. By Charles Mackay, LL.D. 2

vols. 8vo. [In the section devoted to the _Alchymists_, is a carefully

compiled account of the _Rosicrucians_.]

Chambers's Papers for the People, No. 33., vol. v., "Secret Societies

of the Middle Ages."