(Born: Near Brampton, Ontario, Canada, 31 December 1867; Died: Toronto, Ontario, Canada, 6 August 1942) Canadian mineralogist.

Walker was educated at Queen's University, Kingston, receiving his M.A. in 1890. From there he traveled to Leipzig where he was awarded a Ph.D. in 1896. From 1897 to 1901 he was assistant superintendent of the Geological Survey of India. He returned to Canada in 1901, becoming professor of mineralogy at the University of Toronto until 1937. In 1913, Walker was also appointed director of the Royal Ontario Museum of Mineralogy and Petrology in Toronto. He was elected a Fellow of the Royal Society of Canada in 1919, and in 1941 he was awarded the Society's Flavelle medal for his scientific contributions. In 1938, he also received an honorary D.Sc. from the University of Toronto.

Biographical references: ABA: I 1674, 40-43; II 649, 147-148. • BBA: I 1125, 66-67. • Dictionary of Canadian Biography: 779. • Proceedings of the Royal Society of Canada: 1943, xci-xcii. • Sarjeant, Geologists, 1980: 3, 2365. • WBI. • World Who's Who in Science: 1750.

1. English, 1914.
Crystallography, an outline of the geometrical properties of crystals, by T. L. Walker. New York, McGraw-Hill Book Company, Inc., 1914.

8°: xiv, 204 p., frotnispiece, illus. Very scarce.

Bibliographical references: Dana's 7th (Bibliography): 82. • NUC. • USGS Library Catalog.

.