Historical A ccount of Testaceological Writers. 1 85 



concerning their natural history. A Linnean table is subjoined 

 bv the editors; this is too inaccurate, however, to be of use to a 

 scientific student. 



But the above was not the only Testaceological work, materials 

 for which were compiled by this industrious and able artist. His 

 " Delicice Nature selectee" contain seven finely coloured plates of 

 shells, with copious descriptions in French and German, intended 

 for popular use. This volume came forth under the direction of 

 Muller and de la Blaquiere, the original author having died prior 

 to the time of its publication ; but his name cannot fail to be re- 

 membered with respect by those who devote themselves to his 

 favourite pursuit, from the reflection that the useful parts of these 

 elegant performances originated entirely with himself. 



In this place it will be proper to notice a compendious view of 

 various systems of Testaceology written by 



DE BERGEN, 

 and printed at Nuremberg in 1760. It exhibits the systems of 

 twenty-four different authors, under the heads of " Methodi uni- 

 versales" and " Methodi particulares," with concise strictures on 

 each system separately. This work originally appeared in the 

 Nov. Act. Ac. Nat. Cur. 

 The Acta Helvetica contain two Testaceological papers from 



the pen of 



SCHLOTTERBECCIUS; 



one entitled " Observations de Cochlea quadam ad Turbines refe- 

 renda" and the other " Observatio Phijsica de Cochleis quibusdam 

 nee non de Turbinibus nonnullis," &c. The very titles indicate the 

 desultorincss of these descriptions; and the figures accompanying 

 them do not supply their imperfections, except indeed some 

 which arc illustrative of the paper last mentioned, and which re- 

 vol. vii. 2 b late 



