Jean-Baptiste L. Romé de l'Isle
Romé was born in Gray, Haute-Saône, in eastern France. As secretary of a company of artillery in the Carnatic Wars he visited the East Indies, was taken prisoner by the English in 1761, and held in captivity for several years. He was also an alumnus of the Collège Sainte-Barbe in Paris.
Subsequently he became distinguished for his researches on mineralogy and crystallography. He was the author of Essal de Cristallographie (1772), the second edition of which, regarded as his principal work, was published as Cristallographie (3 vols. and atlas, 1783). His formulation of the Law of Constancy of Interfacial Angles built on observations by the geologist Nicolaus Steno.
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.
- Romé de L'Isle, Jean-Baptiste Louis de (1736-1790). Des caractères extérieurs des minéraux, ou Réponse à cette question, 1794