THE I 



LITERARY AND SCIENTIFIC 



CLASS BOOK, I 



i 



EMBRACING THE j 



LEADING FACTS AND PRINCIPLES OF SCIENCE. | 



XUttstratetf i)S ISnfltatJinirs, 



WITH MANT DIFFICULT W0RB8 EXPLAINED AT THE HEADS OF THK | 



LKSSONS, AND QUESTIONS ANNEXED FOR EXAMINATION ', DESIGNED AS 'l 



KXERCISE3 FOR THE READING AND STUDY OF THE HIGHER CLAS5BS ] 



SS COUHON SCHOOLS. j 



SELECTED FROM THE 



'3 



REV. JOHN PLATTS' \ 



aCUrars an^ .Scicntliic &am JJooife, 



JlitfD FROM VARIOUS OTHER SOURCES, AND ADAPTED TO THE WANTS AKB j 



CONDITION OF YOUTH IN THE UNITED STATES. | 



By LEVI W. LEONARD. 



tXXREOTYPED BY T. H. CARTER & CO. BOSTOK. 



PUBLISHED ^Y J. &J. W.PRENTISS. 

 1831. 



