[18] James Witherspoon, born in Haddingtonshore, Scotland, in 1722, was a descendant of John Knox. Graduating from Edinburgh University, and receiving ordination as a Presbyterian minister, in 1768 he accepted an invitation to become president of Princeton College, and brought with him a considerable addition to the college library. From the first he took an active part in the Revolutionary War; as member of the provincial assembly, he assisted in overthrowing the royal governor; as member of the continental congress he signed the Declaration of Independence, and aided in initiating several important legislative measures. After the close of the war, he retired to his farm near Princeton, dying there in September, 1794.--ED. [19] Washington’s Letters, vol. ii, page 4, Lond. 1795.--FLINT. [20] John Mease, a wealthy and philanthropic Philadelphian, was born in 1771. Although a graduate of the Medical College of the University of Pennsylvania, he did not practice regularly, but devoted himself to literary and scientific pursuits. In association with David Rittenhouse and other members of the Philosophical Society, he was engaged in numerous undertakings for the betterment of the city. His _Picture of Philadelphia_, published in 1811, was for many years the best travellers’ guide thereof.--ED. [21] The American Philosophical Society, the oldest scientific association in America, was organized by Franklin in 1743. In 1769 it was combined with the American Society for Promoting Useful Knowledge, and from that date (except for a few years during the Revolutionary War) has never failed to meet regularly. Among its presidents may be noted Franklin, Jefferson, Rittenhouse, and Caspar Wistar. The Society of Artists, formed in 1810, to establish a school of drawing and hold an annual exhibition of foreign and American paintings, was dissolved soon after Flint’s visit to Philadelphia. The Academy of Fine Arts was organized in 1805, largely through the efforts of Charles Wilson Peale. The following year a building was occupied, and the first exhibition opened in 1811, in conjunction with the Society of Artists. The Academy has ceased to hold exhibitions, but maintains a good permanent collection. The Museum, opened by Peale at his residence in 1784, contained for the most part portraits of Revolutionary heroes painted by himself. When transferred to Independence Hall (1802), it included a large collection of birds, insects, and the implements of primitive men. The Philadelphia Museum Company acquired it in 1821; but later the collection was sold and dispersed.--ED. [22] Dr. Mease’s Picture of Philadelphia.--FLINT.