Page:Men of Mark in America vol 1.djvu/362

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WILLIAM HEALEY DALL

various other monographs upon mollusks; "Tertiary Fauna of Florida," (6 vols., 1900-04); "Neocene of North America" (1892); "Coal and Lignite of Alaska" (1896^. He also edited the Marquis de Nadaillac's "Prehistoric America" (1885).

He was married March 3, 1880, to Annette, daughter of Charles Carroll and Marion (Clarke) Whitney of New York and in 1904 three of their four children were living. He says he took up the study of science in spite of the opposition of all of his sensible relatives, and made a resolve at the beginning of his life-work never to turn aside from opportunities for doing scientific work on account of pecuniary reasons, and he persisted in that line of action, but believes that through this persistence he never lost, in the long run.

In religious faith he accepts the teachings of the Unitarian denomination. He says to young men : "Do the work next you, and do it with all your might; nothing is too trifling to do well, and no knowledge attainable is useless."