[154] Brit. Med. Journ., Dec. 14, 1907, p. 1706.

[155] See also Nuttall, Herter Lecture on Spirochætosis, Parasitology, v, p. 269.

[156] C.R. Acad. Sci., cliv, p. 1636; clv, p. 481.

[157] Journ. Exptl. Med., xvi, p. 261.

[158] Journ. Exptl. Med., xv, p. 466.

[159] Journ. Exptl. Med., xvi, p. 202.

[160] Ibid., p. 205.

[161] Ibid., p. 205.

[162] Ibid., p. 208.

[163] Ibid., p. 620.