Etude sur l'evolution d'un probleme de physique; la propagation thermique dans les solides.

Paris:: J. Vrin, 1927 [1928]., 1927. 8vo. 182 pp. Index. Original printed wrappers; spine a bit worn at extremities, small stain, else very good. This work was "designed to show how thermodynamics was both established by and liberated from its early, very poor intuitions (such as that a metal bar heated at one end will become larger)." -- DSB, I, pp. 365-5, by F. Dagognet. To obtain his doctorate (doctorat es lettres) in 1927, Bachelard wrote two theses: the main one, Essai sur la connaissance approchee, under the direction of Abel Rey, and the complementary one, Etude sur l'evolution d'un probleme de physique: la propagation thermique dans les solides, supervised by Leon Brunschvicg.