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Nicolaas Hartsoeker (1656-1725)
By: Cera R. Lawrence
| Published: Sep 26, 2008
Nicolaas Hartsoeker, a Dutch astronomer, optics manufacturer, and naturalist, was born 26 March 1656 in Gouda, Netherlands, and died 10 December 1725…
PeopleHartsoeker, Nicolas, 1656-1725SpermatozoaBiographySperm
Hartsoeker's Homunculus Sketch from Essai de Dioptrique
By: Cera R. Lawrence
| Published: Aug 14, 2008
This embryology image is a pencil sketch by Nicolaas Hartsoeker, published as part of his 1694 French-language paper entitled Essai de Dioptrique, a…
SpermatozoaSperm
Spermism
By: Cera R. Lawrence
| Published: Aug 13, 2008
Spermism was one of two models of preformationism, a theory of embryo generation prevalent in the late seventeenth through the end of the eighteenth…
SpermatozoaSpermOva