3H INDEX, 



Sea Nuts, See Bulla, 



-— S'ilk-JFQrms, 5^e Pinna. 



Seea, 47, 92, 23^. 

 Sellius, 6. 



Semiporcellana, 173, 176. 

 ^Skeaihs, See Solen. 

 Shells, definition of, 2, 3. 



. fifh, of them, 3, 4, 5, 6, 



whether the Syftems of them fhould be formecj 



from the Animals or the Shells, 6. 



• Syilems of, 79. 



. Syftem of the Author, 1 01, J32, 135J & 



the TabuLt Synopticae. 



Ufe of, 58. 



Inflructions for collc£ling, cleaning, &c. 64, 



68, 103. 



Characters of, 102. 



dead, 67. 



Land, 4, 67, 121, 124, 125. 



Frcfli Water, 4,67,68, 124.. 



Sea, 4, 124. 



fimple, 123, 133, 136. 



turbinated, 123, 180. 



chambered, 123, 133, 154. 



revolved, 118, 123, 133, 173. 



tubular, 148. 



Nknothalamia. See Turbinated and Simple, 



Shells, 



