The first medical book to contain an endorsement of Harvey's theory of the circulation of the blood (originally published ten years earlier in 1628). Beverwijck began his work with a treatise on urinary and renal calculi. The second part (pp. 209-305) contains letters addressed by Beverwijck to some prominent physicians along with their replies. Several consilia by Sanctorius, Spiegel, Horst, and others follow. At the end of 1637 Beverwyck wrote a letter to Harvey in which he expressed his admiration for Harvey's discovery of the circulation of the blood. He also sent Harvey a copy of the present book. The passage in which he supported Harvey is "Harvei doctrina de circulatione sanguinus comprobata" (pp. 20-24 of the first part).
Digital facsimile from Google Books at this link.