De calculo renum & vesicae liber singularis. Cum epistolis & consultationibus magnorum virorum.

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.