CARPENTER, George W., scientist, born in Germantown, Pennsylvania, 31 July, 1802; died there, 7 June, 1860. He was a successful merchant in Philadelphia, and devoted his leisure to the study of sciences. His opinion on subjects in geology was of recognized value. He accumulated a choice collection of minerals, and shouted considerable interest in the medical sciences. Mr. Carpenter was a member of numerous scientific societies in this country and Europe, and from 1826 till his death was treasurer of the Academy of natural sciences in Philadelphia. His principal papers are "Experiments and Remarks on Several Species and Varieties of Cinchona Bark" (1825); "Observations and Experiments on Opium" (1828); " Remarks on the Use of Piperine" (1828); " On the Mineralogy of Chester county, with an Account of some Minerals of Delaware, Maryland, and other Localities " (1828); "Observations on the Inefficiency of the Cathartic Power of Rhubarbarine " (1828): " On the Muriate of Soda or Common Salt, with an Account of the Salt Springs of the United States" (1829); " Observations and Experiments on Peruvian Barks" (1829); " Observations on a New Variety of Peruvian Bark " (1831); " The Vesicating Principle of Cantharides" (1832); and "Notice of New Medical Preparations" (1832), most of which appeared in the "American Journal of Science and Arts."