€o C O N C H O L O G Y. 



However, later difcoveries prove, that 

 it is not peculiar to one fpecies only, but 

 that feveral kinds, nay, different families, 

 attord and effund this purple juice : indeed 

 a whole family of Shells ftill retain the 

 name of Purpuras, or purples, from this 

 property. 



The fame and coftlinefs of the dye, the 

 manner of dying, the prodigious prices, 

 and all other particulars of it, which arc 

 foreign to my prefent purpofe, may be feen 

 in the Grecian and Roman naturalifts Arif- 

 totle and Pliny, as alfo in Aldrovandus, 

 Column a, and other modern writers. 



The coftlinefs of the dye proceeded from 

 the fmall quantity of the purple liquor 

 each (hell fifh yielded ; and that it was 

 abfolutely neceflary to get it from the fifli 

 when alive and frefh ; and alfo, that my- 

 riads of animals fcarcely yielded liquor 

 enough to dye a mantle. 



But 



