Note 61 — THE EXPRESSION OF FEELINGS
Reading edition
Marey, loc. cit., pp. 267-271, and Traité de Physique Biologique (publié par d'Arsonval, Chauveau, Gariel, Marey), vol. 1, p. 390, 1901; these tracings are reproduced rather frequently; e.g., Pfungen, loc. cit., p. 563, and Chapman: Human Physiology (2d ed.), p. 270, 1899.