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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…

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Ovism

By: Cera R. Lawrence | Published: Aug 13, 2008

Ovism was one of two models of preformationism, a theory of generation prevalent in the late seventeenth through the end of the eighteenth century.…

OvumOvaSperm

Preformationism in the Enlightenment

By: Cera R. Lawrence | Published: Aug 11, 2008

Preformationism was a theory of embryological development used in the late seventeenth through the late eighteenth centuries. This theory held that…

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