Historical Account ofTestaceological Writers. 189 



descriptions of Geoffroy; they contain figures of forty-six shells 

 (with French names correspondent to Geotlroy's system), all found 

 in the environs of Paris. 



Many valuable experiments and observations, tending to throw 

 ]io;ht on the physiology and pathology of the Snail tribe, are to 

 be found in the Journal des Sfavans for 1770. They were com- 

 menced in the year I768 by 



COTTE, 

 and continued in the Journal de Physique. 



WALLIS, 



the historian of Northumberland, includes the Testacea in his ac- 

 count of the natural productions of that county, adding copious 

 synonyms from Lister, Petiver, and Linnajus; but the number of 

 species described is only eight. 



The commencement of the great conchological work of 



MARTINI, 



in the year I769, may be considered as forming a sort of epoch 

 in the history of that science, it being the most copious, labori- 

 ous, and valuable publication on the subject of shells that has 

 hitherto appeared. Only three volumes, however, Avere completed 

 by this author; the other seven came from a Danish clergyman, 



J. H. CHEMNITZ, 



by whom the undertaking was concluded in 1788. Tlie " Neues 

 Si/stematisches Concln/lien Cabinet" contains 366 plates, exhibiting 

 no fewer than 3711 figures, besides vignettes. Sec. which are all 

 faithfully drawn, and coloured with the utmost accurac}'. In the 

 9th volume are many South Sea species, which had never before- 

 been figured, and which were selected from some of the most 



celebrated 



