The geological observer.
Philadelphia: Blanchard &L Lea, 1851. 4to. [ii], [xi]-xxxii, 33-695, 32, 16 pp., including 2 publisher’s catalogues, both dated July, 1851. FIRST AMERICAN EDITION. Text complete despite pagination; lacking original blanks. With numerous text illustrations. Original publisher’s blind-stamped cloth, rebacked; minor browning and spotting throughout, especially to the publisher’s catalogues. First..... More