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hends 12 shells. The shells which are figured by Regenfres, are of the com- 

 monest species, such as daily fall under the notice of collectors; and it is to 

 be lamented that the talents of this artist were not employed on subjects better 

 deserving of elucidation. 



D'Avilas' catalogue was printed at Paris, in 1767, in three vols, octavo. 

 The first volume treats entirely of shells, and contains 22 plates of the rarer 

 specimens of his cabinet; many of which are scarce, even at this day. 



The splendid work of Martini and Chemnitz, " Neues Systematich.es Kon- 

 cbylien Cabinet " was in a progressive course of publication. In 17G9, the 

 first part appeared; another in 1771, and a third in 1777: these were all its 

 author lived to accomplish. Seven volumes have been since added by F. 

 H. Chemnitz. The body of the work is in the German language: the 

 embellishments consist of 366 plates, and exhibit a number of figures on 

 each plate. 



The Elements of Conchology, by Da Costa, was published in 1776. 

 The publication of Born, upon shells, contains about 200 colored figures, 

 delineated in 18 folio engravings. 



Mr. Pennant's "British Zoology" contains, in the fourth volume, an enu- 

 meration of 163 species of shells, with concise descriptions, and 56 plates, 

 exhibiting figures of nearly all, which are well described, but most miserable 

 engravings, so bad that the shell can hardly be recognized. The " Zoophy- 

 tacium Gronovianun," a description of the rich museum of L. T. Gronovi- 

 us, senator at Leyden, was published in 1781. There are, in this work, 

 scientific descriptions of 589 species of shells, and among the plates, two 

 appropriated to the illustration of the rarer kinds. 



The grand work on shells, by Martini, entitled the " Universal Concholo- 

 gist," was begun in the year 1784, and continued to be published at uncertain 

 intervals, till 160 plates appeared. 



A small quarto treatise, embellished with three plates, the joint labor of 

 Boys and Walker, appeared in London, in 1784. This work treats only 

 of microscopic shells, and the researches of its authors were confined to the 

 Sandwich Islands, as the title indicates. 



In the year 1789, Bruguiere, the well-known traveller in the east, com- 

 menced the testaceologieal part of the grand work carried on in France, 

 under the title of " Encyclopedic Method ique; " but, unfortunately for the 

 cause of science, this skilful naturalist lived only to complete the first volume, 

 which goes no farther than the letter C. of the article Vers (worms.) This 

 work is embellished with many plates, and nearly all the genera. 



