1 Vosburgh and Richards: American Journal of Physiology, 1903, ix, p. 39.

2 Wiggers: Archives of Internal Medicine, 1909, iii, p. 152.

3 Von den Velden: Münchener medizinische Wochenschrift, 1911, lviii, p. 187.

4 Dale and Laidlaw: Journal of Pathology and Bacteriology, 1912, xvi, p. 362.

5 Cannon and Gray: American Journal of Physiology, 1914, xxxiv, p. 321.

6 Cannon and Mendenhall: American Journal of Physiology, 1914, xxxiv, p. 225.

7 Addis: Quarterly Journal of Experimental Physiology, 1908, i, p. 314.

8 Dale and Laidlaw: Loc. cit., p. 359.

9 Howell: American Journal of Physiology, 1914, xxxiii, p. xiv.

10 Hoskins: American Journal of Physiology, 1912, xxix, p. 365.

11 Cannon and Lyman: American Journal of Physiology, 1913, xxxi, p. 376.

12 Cannon and Lyman: Loc. cit., p. 381.

13 Wiggers: Loc. cit., p. 152.

14 See Pawlow: Archiv für Physiologie, 1887, p. 458. Bohr: Centralblatt für Physiologie, 1888, ii, p. 263. Meek: American Journal of Physiology, 1912, xxx, p. 173. Gray and Lunt: Ibid., 1914, xxxiv, p. 332.

15 Cannon: American Journal of Physiology, 1914, xxxiii, p. 396.