Medical notes on climate, diseases, hospitals, and medical schools, in France, Italy, and Switzerland; comprising an inquiry into the effects of a residence in the South of Europe, in cases of pulmonary consumption, and illustrating the present state of medicine in those countries.

Pages 153-59 contain an account of Clark's visit to the Hopital Necker in Paris, with a detailed discussion of the use of the stethoscope introduced by Laennec, one year earlier, in 1819. This was possibly the first account of Laennec's invention and its application in and English book. Digital facsimile from Google Books at this link.