Book reviewed in this article:Die Grundzüge der Theorie des Mikroskops in elementarer Darstellung. 2nd edition. K. MichelModern Developments in Electron Microscopy. Edited by BenjaminM. Siegel.Arbeitsmethoden der makroskopischen und mikroskopischen Anatomie. HansAdamand GerhardCzihak.Science and the Skin. A. Jarrett.Cell Growth and Cell Division. Vol. 2 of the Symposia of the International Society for Cell Biology. Ed. R. J. C. HarrisBotanical Histochemistry, Principles and Practice. WilliamA. Jensen