[174] Usiglio. Encyclopædia Britannica. Article on Salt.
[175] Willis. Jour. of Geol., Vol. I, p. 500, where the evidences for deposition are fully set forth.
[176] Murray, loc. cit.
[177] Ibid., p. 186.
[178] Murray, loc. cit., p. 295.
[179] Challenger Report, Deep Sea Deposits, p. 327.
[180] Young’s Astronomy, p. 472.
[181] Murray. Scottish Geog. Mag., Vol. XV, p. 511. An excellent summary of deep-sea deposits.
[182] Murray, Challenger Report on Deep Sea Deposits, p. 337 et seq., and Buchanan, Proc. Roy. Soc. Edin., Vol. XVIII, 1892, pp. 17–39.
[183] Challenger Report on Deep Sea Deposits, pp. 385–391. See also Jour. of Geol., Vol. II, pp. 167–172.