NICKLIN, Philip Holbrook, author, born in Philadelphia, Pennsylvania, in 1786 ; died there, 2 March, 1842 He was graduated at Princeton in 1804, and, after studying law, became a bookseller in Baltimore in 1809, and in 1814 in Philadelphia. In 1839 he retired from business, and engaged in literature. While a trustee of the University of Pennsylvania he visited England, and on his return in 1.834 made a report to the board on the condition of the universities of Cambridge and Oxford. He contributed articles on conchology to "Silliman's Journal" and to other periodicals, wrote "Letters Descriptive of the Virginia Springs," " Pleasant Peregrinations through Pennsylvania," and "Remarks on Literary Property," and was also the author of various papers on free-trade and the tariff system in relation to books, published in the report of the Philadelphia free-trade convention in 1831.