[234] A similar series of hydrates is formed by zinc chloride and water (Dietz and Mylius, Zeitschr. anorg. Chem., 1905, 44. 209).
[235] Meyerhoffer, Ber., 1897, 30. 1810.
[236] Walden, Ber., 1899, 32. 2863.
[237] Zeitschr. physikal. Chem., 1903, 42. 432.
[238] This composition was also confirmed by measurements of the vapour pressure (cf. p. [90]).
[239] Since all substances are no doubt volatile to a certain extent at some temperature, it is to be understood here that the substances are appreciably volatile at the temperature of the experiment.
[240] For a general discussion of the partial pressures in a system of two components, see Bancroft, Journ. Physical Chem., 1899, 3. 1.
[241] Zeitschr. physikal. Chem., 1889, 3. 11; Rec. trav. chim. Pays-Bas, 1888, 7. 152.
[242] The composition of a solution is represented symbolically by placing a double wavy line between the symbols of the components, and indicating the number of atoms present in the ordinary manner: thus, I
