7 Quoted by Garland, N.Y. Med. Journal, 1879.

8 Ibid.

9 Auscultation and Percussion, 1877.

10 Practice of Medicine, 1880, p. 130.

11 Boston Med. and Surg. Journ., 1874 and 1876.

12 Pneumono-Dynamics, New York, 1878.

13 N.Y. Med. Journal, Nov., 1879.

14 Pneumono-Dynamics.

15 Med. Times and Gazette, Oct., 1882.

Ellis's observations, and those of Garland with his experiments, have given us the most accurate views as regards the form of the curved line of flatness.