downloads – Daniel Liu, History of Science

Cell theory historiography and Gustav Gabriel Valentin’s Histiogeniae plantarum atque animalium (Histiogenia comparata) of 1835/37

Not infrequently, histories of cell theory will mention Jan Purkyně (1787–1869) and his student Gabriel Gustav Valentin (1810–1883) as important forerunners to Schleiden and Schwann. Years before Schleiden’s 1838 “Beiträge zur Phytogenesis” and Schwann’s 1839 Mikroskopische Untersuchungen, Purkyně and Valentin both observed nuclei in animal cells, and both suggested a possible homology between plant cells … Continue reading Cell theory historiography and Gustav Gabriel Valentin’s Histiogeniae plantarum atque animalium (Histiogenia comparata) of 1835/37

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CD-ROM 💿 for Dieter Gerlach’s Geschichte der Mikroskopie (2009)

Dieter Gerlach's book Geschichte der Mikroskopie (2009) is far and away the best single reference work on the history of microscopy.* It is also long out of print: the publisher Verlag Harri Deutsch closed its doors in 2013, and Dr. Gerlach passed away in 2015. Geschichte der Mikroskopie was clearly a labor of love and … Continue reading CD-ROM 💿 for Dieter Gerlach’s Geschichte der Mikroskopie (2009)