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Cover Legend: Coelenterata from Wandtafeln (Wall Charts) by Karl Georg Friedrich Rudolf Leuckart (1822-1898). Leuckart, the "Father of Parasitology" was also a pioneer of 19th century zoology. After earning an M.D. from Gottingen in 1845, he became a Professor of Zoology at Leipzig in 1869. He contributed greatly to the newly established field of animal systematics, dividing Cuvier’s Radiata into two new groups: Echinodermata and Coelenterata. In parasitology, Leuckart is best known for studies of vertebrate infections, chiefly tapeworm and trichinosis. Leuckart and von Zenker documented the life cycle of trichina spiralis in hogs and men. This led Rudolf Virchow to establish the first meat inspection laws in Germany. Leuckart’s Wandtafeln (wall charts), produced from 1877 to 1892, were used worldwide as teaching aids. Coelenterata, meaning "hollow guts" are essentially a sac with a digestive tract. Numerous tentacles trap the prey and sweep the hapless victims into the open "mouths" at the center of the body. (From an exhibit at the MBLWHOI Library curated by Ann Weissmann http://www.mblwhoilibrary.org/exhibits/leuckart/virtual_tour/coelenterata.html.)