diaspora and a breakdown in diplomatic relations between Pennsylvania and the tribe. Throughout his life in the colony Logan engaged in various mercantile pursuits, especially fur trading, with such success that he became one of the wealthiest men in the colonies. He wrote numerous scholarly papers published by the American Philosophical Society and European journals. Logan was also a natural scientist whose primary contribution to the emerging field of botany was a treatise that described experiments on the impregnation of plant seeds, especially corn. He tutored John Bartram, the American botanist, in Latin and introduced him to Linnaeus. His daughter, Sarah, married successful Philadelphia businessman and statesman Isaac Norris. Logan died in 1751 at Stenton, near Germantown, at the age of 77, and was buried at the site of Arch Street Friends Meeting House (built in 1804). Colonial Bibliophile While Logan would eventually become mayor of Philadelphia, chief justice of the Pennsylvania Supreme Court, lieutenant governor, and acting governor he is perhaps best known for being a bibliophile, confessing once that "Books are my disease". He collected a personal library of over 3,000 volumes. Some commentators consider Logan's library to have been the largest and best collection of classical writings in America at that time. Logan would in time become known to Benjamin Franklin and his "Junto"; an influential group of friends that would meet weekly and discuss scholarly and political issues. He became a mentor to Franklin, who published Logan's translation of Cicero's essay "Cato Maior de Senectute". Eventually, the Junto decided to establish a subscription library, a cooperative endeavour where members would pay a fee for use of the library. Franklin and the other members of the Junto considered Logan the "best Judge of Books in these parts" and chose him to select the first 43 titles for the Library Company of Philadelphia. At the same time Logan was helping to build the collection for the Library Company of Philadelphia, he was adding to his own personal library which was considered substantial in number and breadth. He planned on donating his library for public use after his death and to this end he had a building constructed on Sixth Street in Philadelphia. Upon Logan's death, and after a lengthy delay due to some confusion in his will, through an act of the Pennsylvania Assembly and the governor on March 31, 1792, the 3,953 volumes and other property of