For many years Arthur Young (1741–1820), greatest of all English agricultural publicists, was closely associated with the Society for the Encouragement of Arts, Manufactures, and Commerce, established in London in March 1754. Each year the Society of Arts, as it soon came to be called, offered premiums for desirable inventions and improvements in such diverse fields as agriculture, manufactures, chemistry, colonies and trade, and the polite arts. In his numerous books Young frequently commented on the activities of the Society, while the eight volumes of Young manuscript letters in the British Museum contain scattered references to his relations with the Society. A large portion of this article is based, however, upon the manuscript records of the Society of Arts, which I was permitted to examine and use through the courtesy of Mr. Charles Durant Cassidy, librarian and examinations officer, and Dr. Frank R. Lewis, assistant secretary. These records consist of minutes, letters, unpublished transactions, and especially records of the various committees which examined all applications for premiums and made the awards. Among the records are eight unpublished manuscript letters written by Young, two of which are reproduced as an appendix to this article.