Historical Account of Testaceological Writers. 



141 



museum at Oxford. To this University the pla es themselves 

 wtert also bequeathed, and there they were republished in 1770, 

 under the direction of the Rev. William Huddesford, keeper of the 

 Ashmolean museum, who subjoined two indices, one connected 

 with Lister's own distribution, and the other with the Linnean, to 

 which last were affixed as many of the current English names as 

 the editor was acquainted with. This edition differs from the 

 former principally in containing several plates on one page : the 

 whole number is 1085 (28 more than are comprehended m the 

 first edition), but there do not appear plates 89, 164, 19o, 19&, 

 388 9^3 961, which were contained in the original. The num- 

 ber of figures amounts to no fewer than 1153, exclusive of the 

 fossils and anatomical subjects. These, however, are not to be 

 considered as so many distinct species, since there is, doubtless, 

 a repetition of several, which the author, on account of difference 

 of colour and stages of growth, did not imagine to be the 

 same. We ought not to omit mentioning that the delineations 

 of all these, for the most part so accurate, came from the fair 

 hands of this celebrated naturalist's daughters, Susannah and Ann 

 Lister, whose names deserve to descend to posterity with their 

 father's, and whose truly meritorious industry and ingenuity are 

 patterns for their sex. . 



The researches of Lister were by no means confined to the 

 mere coverings of Testacca. So far was he from contenting him- 

 self with pointing out the beauty and variety of the shells, that he 

 not only collected as much as was in his power relative to the 

 habits of the animals, but also devoted great pains to the illus- 

 tration of their anatomical structure. He published three separate 

 " E.iercitations," each exhibiting dissections of Vermes, and con- 

 taining ample descriptions, in Latin. The first " Exercitatio Ana- 

 tomica" relates chiefly to the Limaces. Of the second (to whieh 



