The first treatise to specifically on urinary calculi and gallstones, with each of the 12 chapters exploring a part of the human body where such stones are found (gall bladder, kidneys, bladder, etc.). Additionally, the work discusses various non-digestible objects ingested by people. This work was also published in Conrad Gesner's collection, De omni rerum fossilium (1565). Digital facsimile from Google Books at this link.