LIST 



INFUSORIAL OBJECTS, 



FOUND CHIEFLY IN THE NEIGHBOKHOOD OF 



SALEM, MASSACHUSETTS; 



WITH A SKETCH OF THE 



PROGRESS OF THIS BRANCH OF 



NATURAL HISTORY, 



THOMAS COLE, A.M., A.A.S. 



MEMBER OF THE ESSEX INSTITUTE, 4c. 



[From tile Proceedings of the £ssex Institute.] 



SALEM: 



ITES &. PEASE PKINTERS. 



1853. 



