VIOLLE, J. (JULES).

Sur un calormétre par refroidissement.

(Paris, Gauthier-Villars), 1882. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 94, No 23. Pp. (1487-) 1545 (entire issue offered). Violle's paper: pp. 1510-1545.

First printing of the paper in which Violle records his method for keeping a liquefied gas sufficiently cool to remain in the liquid state, thus introducing the quiding principle of the thermos bottle.

"Using the fact that a vacuum does not transmit heat, Violle stores the liquid gas in glass containers with double walls separated by a vacuum and with silvering on the exterior wall to reduce radiant impact" (Parkinson "Breakthroughs 1882 C).

Order-nr.: 49091