Book Details + Condition: Scarce complete set of four volumes bound in two from 1860 of "Cassell's Popular Natural History," published by Cassell, Petter & Galpin. Solid half calf binding with gilt lettering on spine. Large works (10.5" x 8"), with 375 pp to Vol 1-2, and 346 pp to Vol 3-4. In Very Good Condition with minor shelfwear to boards. For Volume 1-2: pages are crisp and clean save for some spots of foxing along the borders on the first two blank pages, frontispiece and title page. All other pages are crisp and clean. For Volume 3-4: crisp clean pages free and free of interior markings. Profusely illustrated, with nearly 1,500 vignette and full-page engravings across all volumes. Including twelve plates to Volume 1 & 2, thirteen to Volume 3, and eleven to Volume 4. No date to title page, dated from Copac. Collated, complete. A popular reference work on Mammals, Birds, Reptiles, Fishes, Insects, Worms, Crustaceans, Molluscs, Sea Stars, Echinoderms, Corallines, Corals and Animalcules. Created by the British publishing house Cassell & Co, originally founded in 1848 by John Cassell. By the 1890s Cassell became an international publishing group company. Cassell published several reference works and dictionaries as well as their Cassell's Magazine and Saturday Journal.