Boston: Little, Brown and Co., 1857. Hardcover. Louis Agassiz (1807-1873) was one of the most important scientists of his time. Swiss-born, he became one of the founders of the American scientific tradition. In these five volumes he presents his research on turtles and on acalephs - jellyfish, nettles etc. The first two volumes comprise his monographs but the other twoinclude many detailed and exquisite plates of his subjects. This is an ex-library set from the Williston Seminary, and someone at this institution was apparently enamoured of the library's ownership stamp. There are intermittent stamps in the text, a stamp in the margin of each plate in volume II, on some of the plates in volume III, and none to the plates in volume IV. In the original brown cloth binding, but volume III has been rebacked. The foot of spine of volume I has one inch chip; all volumes have wear at ends of spine and around edges, with some repairs to worn areas. Library ownership label on front pastedowns. Still a decent copy of this important scientific work. This set may require an extra shipping fee. NAT/5093. Good.