Physiological essays [electronic resource] : containing, I. An inquiry into the causes which promote the circulation of the fluids in the very small vessels of animals. II. Observations on the sensibility and irritability of the parts of men and other Animals; occasioned by M. de Haller's late treatise on these subjects. The third edition, with an appendix, containing an answer to M. de Haller's remarks in the 4th volume of the Memoires sur les parties sensibles et irritables. By Robert Whytt, M.D. F.R.S. Physician to his Majesty. Fellow of the Royal College of Physicians, and Professor of Medicine in the University of Edinburgh.