We give below the address of President Wilder, at the Eighth Session of the American Pomological Society, held at Philadelphia, Sept 11-13, 1860. It is a valuable document, and will be read with much interest:

Gentlemen of the Society, and Friends of American Pomology: - By our Constitution, my ! official position requires me, at the opening of this session, to address you on the art or science of pomology, on the interests, progress, and present condition of our association.

In the performance of this duty, I am happy to meet you in this city of brotherly love, the birthplace of that Declaration which gave us an independent national existence; of that Constitution also, which embodies the wisdom of our venerable fathers, and is the charter by which we hold the inheritance we seek to improve, enjoy, and transmit. Here, too, by a former inhabitant of Philadelphia, a few years later, was first exhibited the application to vessels of that invisible agent, which now propels thousands of steamers through our navigable waters, which has wrought such wonders in all the useful arts of life, and is progressing upon a stupendous scale of development Here was organized the first society for the promotion of American Agriculture. Here, also, originated the first association for the advancement of American Horticulture, having for one of its leading objects, the introduction and cultivation of new and choice varieties of fruit.