MONTRUEIL, D6sir6 Amable Ferdinand (mong-truh'-ee), French botanist, born in Saulieu, Burgundy, in 1709; died in St. Gratien, near Paris, in 1760. He was given in 1737 a mission to explore northern Canada, and in particular the territories around Hudson bay, and during six years collected many specimens of the Canadian flora, but while he was returning to France he was captured by the English and taken to London. He was released after the conclusion of peace in 1748, and vainly endeavored to recover his property, but the British authorities refused to surrender it, in spite of the protests of the Paris academy of science to the London royal society. Returning to this continent in 1750, he again explored northern Canada, and after forming a new collection visited the New England states, Philadelphia, and Newfoundland during 1750-'4. hi 1755 he was given a like mission to Santo Domingo, and passing afterward to the continent, explored for two years the Guianas and Venezuela. He published "Voyage a la bale d'Hudson" (Paris, 1749); "Etudes sur l'histoire naturelle du Canada ou Nouvelle France du Nord" (1754); "Expose du systeme vegatal de la vallde du Saint Laurent au Canada" (1755); " Histoire et description des plantes medicinales propres a la Guiane" (1758) ; "and "Etudes sur la nature tropicale " (Paris, 1759).