Life and Letters of Louis Agassiz.

By Elizabeth C. Agassiz. With Portraits and several Illustrations. 2 vols. crown 8vo, $4.00.

Mrs. Agassiz has written in the most delightful manner the story of the great naturalist's life, and has woven into the narrative a large number of his letters, the whole forming a peculiarly attractive biography and a work of remarkable value and interest to all students of Natural History.