[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.
Transcriber's note:
Minor typographical errors have been corrected without note. Irregularities and inconsistencies in the text have been retained as printed.