Each nucleus has, then, (1) a protoplasmic body, and (2) a portion formed of nuclein, which is the chromatin of [Walther] Flemming. […] The chromatic reticulum of Flemming is only an appearance due to the regular crossing of its convolutions, rarely to their temporary union.
1887 December 14, John Gray M‘Kendrick [i.e., John Gray McKendrick], “IV.—On the Modern Cell Theory, and the Phenomena of Fecundation.”, in Proceedings of the Philosophical Society of Glasgow, volume XIX, Glasgow: Published for the [Philosophical] Society [of Glasgow] by John Smith and Son, […], published 1888, page 84