BRAIN 



THE 



MADREPO.RE. 



Generic Character. 



Animal refembling a Medufa. 



Coral marked with lamellar {Hated cavities. 



Specific Character, &c. 



NEARLY GLOBULAR MADREPORE, with 

 very long tortuous undulations, the promi- 

 nent ones terminating flattifh. 



THE GREAT BRAIN-STONE. 



The Madrepore reprefented on this plate is found of 

 various fizes, from a few inches to upwards of two feet 

 in diameter. Its form is nearly globular, but much 

 more accurately fo in fome fpecimens than in others. 

 From the general refemblance which the undulated fur- 

 face bears to the cortical or exterior part of the brain 

 in quadrupeds, it has obtained its common title of 

 Brain- ftone. There is another fpecies which in fize and 

 general appearance fo very nearly refembles the pre- 

 fent, that on a curfory view it would readily pafs for 

 the fame; and indeed can fcarce be regarded in any 



other 



