Plana, J. — Mémoire sur l'expression du rapport, qui (abstraction faite de la chaleur solaire) existe, en vertu de la chaleur d'origine, entre le refroidissement de la Masse totale du Globe Terrestre et le refroidissement de sa surface.

Turin, Impr. Royale, Mem. de l'Acad. des Scienses de Turin, 1863. 4to. 80p. Cont. wrs. (upper part a corner lost) - uncut. = Rare monograph on the cooling of the world. Giovanni Plana, was a pupil of Lagrange, who recommended him for the chair of Astronomy at Torino University in 1811. Dedication from the author to the Royal Society of Edinburgh dated 1863. Small library stamps on the cover and titel of the same society.