Harper's Encyclopedia of United States History
Benson Lossing, Ed.

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Knowlton, Frank Hall 1860-

Botanist; born in Brandon, Vt., Sept. 2, 1860; graduated at Middlebury College, Vermont, and appointed an aid in the United States National Museum in 1884; became assistant curator of botany in 1887; and assistant paleontologist of the United States Geological Survey in 1889. In 1887-96 he was Professor of Botany in Columbia University. He wrote the botanical definitions for the Century dictionary and later had charge of the department of botany in the Standard dictionary, writing about 25,000 definitions for the last work. He is the author of Fossil Wood and lignite of the Potomac Formation; Fossil Flora of Alaska; Catalogue of the Cretaceous and Tertiary plants of North America, etc.; and is the editor of The plant world.