My acknowledgments are due to Dr. Smiles’s “Lives of the Engineers,” “Life of the Stephensons,” and “Life of a Scotch Naturalist;” to Lady Eastlake’s “Life of Gibson;” to Mr. Holden’s “Life of Sir William Herschel;” to M. Seusier’s “J. F. Millet, Sa Vie et Ses OEuvres;” and to Mr. Thayer’s “Life of President Garfield;” from which most of the facts here narrated have been derived.

G. A.