[122] These were hypothetical spaces or channels between the atoms; cf. Introduction, p. [xiv].

[123] He means the specific drawing power or faculty of the lodestone.

[124] cf. our modern “radium-emanations.”

[125] cf. Ehrlich’s hypothesis of “receptors” in explanation of the “affinities” of animal cells.

[126] i.e. from the point of view of the theory.

[127] cf. p. 69, [note 2].

[128] That is to say, the two properties should go together in all cases—which they do not.

[129] Trygon pastinaca.

[130] cf. p. 66, [note 3].

[131] The way that corn can attract moisture.