Jena, Gustav Fischer, 1898. 8vo. (22.5 x 14.8 cm). 46 pp.; three large, folded plates. Original printed wrappers and blind, protective wrappers.

A rare offprint signed by the author, the American malacologist Mary Alice Willcox (1856-1953). This was her thesis. "She taught at the Frederick Female Seminary in Maryland, 1875-76, and Charlestown High School in Boston, 1876-78. During the summers of 1877 and 1878, she attended the marine laboratory of Alexander Agassiz. She studied at the Massachusetts Institute of Technology and the Boston Society of Natural History from 1878 to 1880. For her undergraduate education, in 1880 Willcox travelled to England and studied at Newnham College. She completed her studies in 1883, but, at the time, Cambridge University did not grant degrees to women. With the help of her father, Willcox gained a position in the zoology department at Wellesley College in Massachusetts. Her mother, however, regretted the decision since it meant 'giving up all possibilities of marriage'. Very little in the way of zoological course work had been developed at Wellesley to that point, and Willcox had the task of essentially building a zoology department from scratch. She introduced a number of innovative teaching methods. For a time, her department became one of the foremost in the country, attracting a number of women who would become productive zoologists. Her interest during this period was in ornithology, and in 1895 she published Pocket Guide to the Common Land Birds of New England. To improve her job security at Wellesley, in 1896 Willcox took a leave of absence to study for a Ph.D. at the University of Zurich. In 1898 she was at the Naples Zoological Station. She completed her degree program in 1898 with a dissertation On the Anatomy of Acmaea fragilis (Chemnitz) [this paper], and was allowed to return to her position at Wellesley as head of the department. Much of her research at the college was on comparative anatomy of molluscs, a phylum of invertebrate animals, and of Acmaeidae, a family of sea snails. She authored a number of scientific papers in zoological publications. Her last paper, published in 1906, was on the anatomy of Acmaea testudinalis. Willcox retired in 1910 as professor emeritus, supposedly as a result of poor health. The exact cause is unclear, but a 1928 letter mentioned rheumatism. Following retirement, she became active in the League of Women Voters, Federation of Women's Clubs, National Audubon Society, and the Boston Society of Natural History" (Wikipedia). Apparently, Willcox learned German during her stay in Zürich and Naples. From the library of the American malacologist Richard Irwin Johnson (1925-2020), with his stamp in the top margin of the front wrapper, and the front wrapper and first page top margin. Weak crease to lower outer margin of the first few leaves, otherwise very good.