LESSONS ON SHELLS, 



IN A PESTALOZZIAN SCHOOL, 



AT CHEAM, SURREY, 



BY TUB 



AUTHOR OF "LESSONS ON OBJECTS." 



ILLUSTRATED BY TEN PLATES, DRAWN FROM NATURE. 



THIRD AMERICAN EDITION. 



NEW-YORK : 

 CHARLES J. FOLSOM, 



NO. 40 FULTON, CORNER OF PEARL-STRJEET. 



1842. 



