[2] Humphry, 'Old Age,' 1889, p. 23.

[3] Op. cit., p. 48.

[4] Humphry, 'Old Age,' 1889, p. 15.

[5] Leonard Hill, Allbutt's 'System of Me inc,' vol. xii; George Oliver, 'The Blood and Blood-Pressure,' p. 170, 1901.

[6] A medical friend who has suffered from tobacco heart assures me that at one period he could distinguish the contractions of the auricles and ventricles.

[7] Maguire, 'Trans. Clin. Soc. of London,' vol. xx, p. 235.

[8] Mott, "Cardio-Vascular Nutrition and its Relation to Sudden Death," Practitioner, xli, p. 161.

[9] Mott, 'The Croonian Lectures on the Degeneration of the Neurone,' p. 110, 1900.

[10] Dyce Duckworth, 'A Treatise on Gout,' 1889, p. 108.

[11] Murchison, 'Clinical Lectures on Diseases of the Liver,' 3rd edition, 1885, p. 637.

[12] Cf. Clifford Allbutt, "Selections from the Lane Lectures," Philadelphia Med. Journ., January 27th, 1900.

[13] Mott, Practitioner, loc. cit., p. 169.

[14] Clifford Allbutt, 'System of Medicine,' v, p. 843.

[15] G. W. Balfour, 'The Senile Heart,' p. 236, 1894.

[16] Balfour, op. cit., p. 249.