lG6 Dr. Maton's and Mr. Rackett's 



The second edition of D'Argenville was augmented by a his- 

 tory of the Mollusca inhabitants of shells, and three new plates, 

 two of which are illustrative of those animals ; and the latter are 

 figured, in general, of their natural size. 



In 1780 there was another publication of this admirable work, 

 with considerable additions, corrections, and improvements, by 

 Messrs. Favanne de Montcervellc (father and son). There are 

 upwards of 2000 shells figured in this edition, and in so masterly 

 a manner that the Avork, on the whole, surpasses every thing of 

 the kind which the world had seen before, and must still be held 

 in the highest estimation by the lovers of tcstaceology. 



BARTRAM 



appears in the Philosophical Transactions as author of some " Ob- 

 servations concerning the Salt-marsh Muscle, the Oyster-banks, 

 and the Fresh-water Muscle of Pennsylvania." These obser- 

 vations are accompanied by figures. 



NEEDHAM, 



whose account of Microscopical Discoveries is well known in our 

 own country, deserves mention here, as having given a very full 

 description of the Lepas ana/ifera, with figures of that shell and 

 of various parts of the contained animal, which are referred to by 

 Linnams. 



At this period the " Tcstacco-Thcologia" of 



EESSERS 



was written, with a view to elevate the study of those beautiful 

 and varied creatures that inhabit the depths of the ocean to a 

 level with others more commonly chosen for demonstrating 

 the power and wisdom of the divine Ruler of the universe; and 



surely 



