4 CONCHOLOGY. 



drupeds, birds, fiflies, or reptiles ; and 

 therefore properly appertain to the fifth 

 clafs of animals, or infeds. They are alfo 

 deftitute of any bones ; thofe fulcra or 

 props to the mufcles of the animal ftruc- 

 ture, being exterior in thefe creatures, in 

 their Shells ; and not interior, as all 

 bones of other animals are placed. How- 

 eker, they are endowed with the principal 

 "^parts, as the mouth, lungs, heart, &c. 

 befides other parts fuitable to their na- 

 ture of life. The full defcriptions of 

 the animals themfelves, or any anatomical 

 difquifitions, are not the fcope of my 

 prefent work. It is rather too abftrufe 

 and unentertaining : but for thofe curious 

 particulars I fhall refer my readers to the 

 principal authors who have invefligated 

 them fcientlfically ; efpecially Lifter % 

 *v Adanfon 



«^ The Oyfter, common Land Snail, kc, in his 



Hiftoria Conchylioriim — Exercitatio Anatomica, in 



qua de Cochleis maxime terreflribus et Limacibu^ 



-agitur. Lond. 1694, 8vo. Exerc. Anat. altera, in 



<]ua maxime agitur de Buccinis Fluviatilibus et 



Marinis, 



