Fasciculus Chemicus

Expressing the Ingress, Progress, and Egress, of the Secret Hermetick Science out of the choicest and most famous authors is an anthology of alchemical writings compiled by Arthur Dee (1579–1651) in 1629 while resident in Moscow as chief physician to Czar Michael I of Russia.

Fasciculus Chemicus was revised by Dee sometime between 1631 and 1633 and translated from Latin into English by Elias Ashmole in 1650 under the anagrammatic pseudonym of "James Hasolle" (by substitution of the letter J for I).

Arthur Dee lists the stages of the alchemical opus in Fasciculus as ten in number: During the 1650s an easing of regulations on the licensing of printing-presses and the subject-matter of leaflets, pamphlets and books occurred in England.

This allowed the newly liberalised printing presses of the Protectorate of Oliver Cromwell to cater to the reading public's fears and speculations on England's future.

Dee's anthology was in the vanguard of a revived interest in alchemy in Britain throughout the 1650s, the foremost publication being Ashmole's major edition of British alchemical literature, Theatrum Chemicum Britannicum (1652).