(Born: Livermore Falls, Maine, U.S.A., 6 May 1847; Died: Bangor, Maine, U.S.A., 21 April 1921) American petrologist & crystallographer.

In 1869, Wadsworth graduated from Bowdoin College, Maine. After teaching chemistry in the Dental School at Boston, he became assistant in mineralogy and lithology at Harvard University. In 1884-5, he visited Europe and studied petrography under H. Rosenbusch. In 1887, Wadsworth became president of the new Michigan School of Mines. Later he became Dean of the School of Mines and professor of mining geology at the University of Pittsburgh, retiring in 1912.

Biographical references: ABA: I 1666, 15-28; II 646, 275. • Adams, Dictionary of American Authors, 1904: 400. • Bulletin of the Geological Society of America: 35 (1924), 15-25, portrait [by A.C. Lane]. • Herringshaw's National Library of American Biography. • Lambrecht & Quenstedt, Catalogus, 1938: 448. • Mineralogical Magazine: 20 (1924), 273-4 [by L.J. Spencer]. • National Cyclopedia of American Biography: 13, 538. • Poggendorff: 3, 1405 & 4, 1584. • Sarjeant, Geologists, 1980: 3, 2358. • WBI. • World Who's Who in Science: 1744.

1. English, 1909.
Crystallography | An Elementary Manual For The | Laboratory | by | M. Edward Wadsworth, A.M., Ph.D., F.G.S., | [...3 lines of titles and memberships...] | 3 Tables, 25 Plates, And 612 Figures | [rule] | Philadelphia: | John Joseph McVey | 1909.

8°: [i]-xvi, 1-20, 1-299, [1] p., 25 double plates. Bibliography, p. x-xiii. Very scarce.

Contents: [i-ii], Title page, verso "Copyright, 1909, | John Jos. McVey."; [iii], Dedication to Josiah Dwight Whitney.; [iv], Blank.; v-xvi, "Introduction."-dated 12 August 1909.; (1)-(20), "Table Of Contents."; 1-261, Text.; 262-264, "Errata."; 265-299, "Index."; [1 pg], Blank.

Bibliographical references: Centralblatt für Mineralogie: 1909, p. 525. • Dana's 7th (Bibliography): 82. • NUC: 644, 78 [NW 0007624].

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