THE LITERARY AND SCIENTIFIC CLASS BOOK, EMBRACING THE LEADING FACTS AND PRINCIPLES OF SCIENCE. Illustrated by Engravings, WITH MANY DIFFICULT WORDS EXPLAINED AT THE HEADS OF THE SELECTED FROM THE REV. JOHN PLATTS' Literary and Scientific Class Book, AND FROM VARIOUS OTHER SOURCES, AND ADAPTED TO THE WANTS AND BY LEVI W. LEONARD. STEREOTYPED BY T. H. CARTER & CO. BOSTON. Keene, N. H. PUBLISHED BY JOHN PRENTISS, [Proprietor of the copy-right.] |