Héricart de Thury (Louis Étienne François). Geological and physical considerations about the emergence of spring springs by drilled wells, along with investigations about the origin and invention of the earth drill, the current point of view of well drilling, and the degree of probability of success of wells. Translated from French and multiplied with an appendix, by C. W. Frommann. XXXII, 375, (1) pp. 8 (7 folded, 3 partially coloured) lithographic plates. 20 x 12 cm. Marbled cardboard band d. Zt. (back discoloured) with RSchild. Koblenz, K. Bädecker, 1833. Engelmann 148. Bruckmann, Wegweiser 37 (detailed). – The only German edition of Héricart's "Considérations géologiques et physiques sur la cause du jaillissement des puits forés et des fontaines artificiales" (Paris 1823; 2. Vol. ==References== After a brief historical introduction to the development of the earth drill, Héricart describes the well drilling system in France, England, Italy, China and the USA (p. 24-64). The next paragraphs on the various mountain formations and the formation of underground water accumulations and springs (p. 65-168). From S. 185 via Bohrbrunnen in France. The appendix of Frommann (p. 307-375), among others, about Bohrbrunnen in Germany, with a description of the rope drilling and about the creation of an artesian fountain in the Saarlouis fortress, which had been led by Frommann himself (pp. 326-353; Table 7). Héricart de Thury (1776-1854) was Ingénieur-en-Chief of the Mine and director of the public buildings in the Seine department and has become famous for his work in the constructions to prevent the collapse of the Paris catacombs. Library in Corvey and the Fürstl. Hofbibliothek Donaueschingen verso Title. 1 panel with repaired edge crack (no image loss).