AGASSIZ, PEOF. LOUIS. (Continued.) 



Remarks on the classification of Mollusca. (June 5th, 1850.) 



Vol. Hi, p. 301, November, 1850. 



Remarks on the Genera of American Freshwater Mollusks. 

 (November 20th, 1850.) 



Vol. Hi, p. 356. December, 1850. 



AN INTRODUCTION TO THE STUDY OF NATURAL IILSTORY. Svo. NEW 



YORK, 1847. 



TWELVE LECTURES ON COMPARATIVE EMBRYOLOGY. DELIVERED BE- 

 FORE THE LOWELL INSTITUTE IN BOSTON. Svo. BOSTON, 1849. 



ANONYMOUS, 



IN THE MONTHLY AMERICAN JOURNAL OF GEOLOGY AND NATURAL 

 SCIENCE, PHILADELPHIA. 



Ohio Shells ; a Criticism on Short and Eaton's (c Notices of 

 Western Botany and Conchology," and Rafinesque's " Monograph 

 of the Bivalve Shells of the River Ohio. 



Vol. i, No. 8, p. 370. February, 1832. 



IN SILLIMAN'S AMERICAN JOURNAL OF SCIENCE AND ARTS. IST SERIES. 



Conchology. Mr. Lea on the Naiades, in the Transactions of 

 the American Philosophical Society. 



Vol. xxii, No. 1, p. 169. April, 1832. 



Review of Mr. Lea's " Observations on the Genus Unio." 



Vol. xxvii, No. 2, p. 371. January, 1835. 

 Vol. xxxv, No. 1, p. 184. October, 1838. 



Preparation of Freshwater Shells for the Cabinet, 



Vol. xlii, No. 2. p. 391. April, 1842. 



