Petrus Camper, Discours prononçés par feû Mr. Pierre Camper, en l'Acadêmie de dessein d'Amsterdam : sur le moyen de représenter d'une manière sûre les diverses passions qui se manifestent sur le visage, sur l'étonnante conformité qui existe entre les quadrupèdes, les oiseaux, les poissons et l'homme, et enfin sur le beau physique / publiés par son fils Adrien Gilles Camper ; traduits du hollandoîs par Denis Bernard Quatremere d'Isjonval. Utrecht: B. Wild et J. Altheer, 1792. First French edition. Quarto: [4], VIII, 107, [1] pages, with 11 engraved plates, five folding and an engraved portrait of Camper, which is often missing. Bound with Petrus Camper, Dissertation physique… sur les différences réelles que présentent les traits du visage chez les hommes de différents pays et de différents âges; sur le beau qui caractèrise les statues antiques et les pierres gravées. Suivie de la proposition d'une nouvelle méthode pour déssiner toutes sortes de têtes humaines avec la plus grande sûreté. Pub. après le décès de l'auteur par son fils Adrien Gilles Camper. Tr. du hollandois par Denis Bernard Quatremere d'Isjonval. Utrecht: B. Wild & J. Altheer, 1791. FIRST French edition. Quarto: viii, 114, [2] pages, with 10 engraved plates, five folding. With half-titles, old ink inscriptions to the half-title of Discours (which is bound first). In contemporary half green morocco, rubbed with ‘shelf wear’ (corners and edges worn), but not difficult to brighten up: the joints are strong and the structure excellent. The interior is very clean, with wide margins and strong joints. The paper, typically late 18th-century French, is lovely, creamy and thick. Two influential works by the Dutch physician and physiologist, one of the first to take an interest in comparative anatomy. The first mentioned work is on craniology and introduced the facial angle or ‘Camper's angle’, comparing the angle of the human face of modern peoples to classical statues. The second item concerns the scientific representation of the human form in art and the similarity of expression in humans and animals. In contemporary half green morocco, rubbed with ‘shelf wear’ (corners and edges worn), but not difficult to brighten up: the joints are strong and the structure excellent. The interior is very clean, with wide margins and strong joints. The paper, typically late 18th-century French, is lovely, creamy and thick.