original: "Recueil 38 in 4to." A quarto is a book size formed by folding a printed sheet twice, creating four leaves or eight pages.

1 Collection of 12 treatises?. Geber, Roger Bacon, Richard the Englishman
Geber is the Latinized name of Jabir ibn Hayyan, a foundational figure in early chemistry. Roger Bacon was a 13th century English philosopher. Richard the Englishman, or Richardus Anglicus (a medieval medical writer), is often associated with alchemical texts.
2 Paracelsus's Labyrinth of Wandering Physicians, 1553.
Paracelsus was a Swiss physician and alchemist who rejected traditional medical teachings in favor of chemical treatments.
3 Michael Potier, Apology of Hermetic Justice, 1631.
Michael Potier was a 17th century alchemist. Hermetic (relating to the mystical and alchemical teachings attributed to Hermes Trismegistus).
4 Berengarius of Carpi, On the Fracture of the Skull, 1535
Berengarius of Carpi was a famous Italian physician and the first to describe several anatomical structures.

812 pages.

Collection of Alchemy

Two Dialogues.

This volume appears to be a "Sammelband," which is a single book containing several different publications bound together by a later owner.