SECTION XL 279 



imperfeft. Dr. Wood-vard arranges all Bi- 

 valves in the following manner. Part I. 

 Eared Shells, as i. the Efcallops. 2. the 

 Spondyles ; and, 3. the Margaritifera?, 

 Part I L Shells not eared, and with un- 

 equal valves, as 4. the Oyfters ; and, 5. 

 the Anomlc^. Part III. Not eared, with 

 equal valves, as 6. the Cockles. 7. the 

 Cunei and Tellens ; and, 8. the Mufcles: 

 and thofe Shells which are always open or 

 gaping in fome part, he ranks, 9. the So- 

 lens 5 10. the Chamie; and 1 1. the Piniis. 



I have now fet forth the fyftems of the 

 authors known to me, to fhew how far they 

 are perfeft or erroneous ; but I fliall re- 

 mark, that all of them, except Wood- 

 ward and Linncsus, feem no wife fcientlfical, 

 but arbitrary and confufed. 



Before I begin to detail my lyftem, I 

 think it very necelfary to fettle the tech- 

 iiical terms or names for the parts of Bi- 

 valves, ufeful for making their defcriptions 



intelligible 



