Beagle, acknowledged his debt to it" (Dibner, Heralds of Science 96); Grolier/Horblit 70; Norman 1398. (3)" /> LYELL, Charles. <I>Principles of Geology, being an attempt to explain the former changes of the earth's surface, by reference to causes now in operation.</I> London: John Murray, 1839. 3 vols. 8<V>o. Frontispiece (hand-colored aquatints in vols. 2 and 3), 7 engraved plates including 2 hand-colored maps (one folding), numerous illustrations in text. Late 19th-century half sheep and marbled boards (vol. III rebound, light rubbing to edges). FIRST EDITION, of Lyell's doctrine of uniformitarianism. "Lyell insisted that the past must be interpreted in terms of the forces now in progress. Darwin, who took this work with him on the <I>Beagle</I>, acknowledged his debt to it" (Dibner, <I>Heralds of Science</I> 96); Grolier/Horblit 70; Norman 1398. (3) | Christie's