This thesis is concerned with the political implications of two of Jacques-Louis David's paintings: Oath of the Horatii (1784) and The Lictors Bringing to Brutus the Bodies of His Sons (1789). In this thesis, I argue that David’s pre-Revolutionary work contained political anticipations of Revolutionary France articulated in his Neoclassical forms, the classical stories he chose to paint, his own narrative innovations using light, color, gender, unusual scenes and the thematic conflict of the state vs the individual and family.

Etienne Geoffroy Saint-Hilaire, commonly known as Geoffroy, studied animals, their anatomy and their embryos, and teratogens at the National Museum of Natural History in Paris, France in the eighteenth and nineteenth centuries. Geoffroy also helped develop several specialized fields in the life sciences, including experimental embryology. In his efforts to experimentally demonstrate the theory of recapitulation, Geoffroy developed techniques to intervene in the growth of embryos to see whether they would develop into different kinds of organisms. Moreover, Geoffroy emphasized the concept of l'unite de composition (the unity of plan). Geoffroy disputed in 1830 with Georges Cuvier over whether form or function matters most for the study of anatomy and whether the transformation of organic forms can occur over time. Geoffroy's conceptual contributions, as well as his experimental research, influenced embryological research on animal morphology and teratogens, and later the field of evolutionary paleontology.