Note 684 — Chapter IV
Reading edition
Month. Not., vol. xxxviii., p. 473; Trowbridge and Hutchins, Amer. Jour. of Science, vol. xxxiv., p. 263.
Reading edition
Month. Not., vol. xxxviii., p. 473; Trowbridge and Hutchins, Amer. Jour. of Science, vol. xxxiv., p. 263.