Each part has special half title and separate paging.
The 3d tract has added half title: Appendix. Containing cases of persons admitted into the hospital at Bath, under the care of the late Dr. Oliver.
The first tract was published in 1754 under title: A treatise on the Bath waters. The 2d tract was published in 1770 under title: An inquiry into the efficacy of warm bathing in palsies.