Form and Function: A Contribution to the History of Animal Morphology

by E. S. Russell

The Schleiden-Schwann theory of the origin of cells by generation in a cytoblastem was now definitely overthrown.

The importance of the protoplasmic content of the cell was brought into prominence through the work of Dujardin,[289] Purkinje,[290] Cohen[291] and Max Schultze.[292] The last-named in 1861 proposed a definition of the cell which might be accepted at the present day. "A cell," he wrote, "is a little blob of protoplasm containing a nucleus" (p. 11).

[238] Theoria generationis, Halae, 1759.

[239] See J. v. Sachs, Geschichte der Botanik, book ii., Eng. Trans., 2nd impr., 1906.

[240] Müller's Archiv, pp. 137-76, 1838.

[241] Trans. Linnean Soc., xvi., p. 710, 1833.

[242] Myxinoiden, i. Theil., p. 89, 1835.

[243] Ann. Sci. nat. (2) (Zool.) ii., pp. 107-18, pl. 11, 1834.

[244] Proc. Phil. Soc. Glasgow, xix., pp. 71-125, 1887-8.

[245] Traité sur le venin de la vipère, 1781.