^4 Natural Hiftory of 



Fii>;. Bj and B i, fliew the Joint and ramihed Tubes of 

 the lefTcr Species at Fig. b^ magnilied when the cretaceous 

 Saif?ice v/as taken off in Hke manner. 



I ihall introduce a third Species of articulated CoralHne, 

 on account of its Singularity ; it feems to be the Corallina 

 fijlulofa Jamakenjh Candida cum mtermdiis brevijftmis^ ^ 

 qiiafi filo trajeSiJSy of Plukenet. I fhall call it the Rofary 

 or Bead- Coralline of Jamaica (See Fig. c, Plate XXV). 



The Fiw. C, fliews one of tlie Beads magnified ; Tind on 

 the lower Part, where the next Bead is laid open to difcover 

 the Tube, we may perceive regular Rows of fmall Pipes, 

 that lead from the middle horny Tube, through the creta- 

 ceous Subftance to the Cells on the Surface, at^. 



The Tuft of Hair-like Tubes, at C, which are to be (ttn. 

 at the Top of each Branch, appear to be the Ramifications, 

 that belong: to the next Bead that is to be formed. 



When the cretaceous Part is diffolved in Vinegar, we 

 find many Seed-like Paiticles difpofed among Cells of an 

 Heart-fhape, as at Fig. C i. 



To thefe I fhall add another Sea-produ6lion, upon ac- 

 count of its approaching to the articulated Corallines, in its 

 manner o'^ growing. 



I received it, among many other Varieties, from the Sea- 

 coafl of the IJls of JFight. It appears in the Microfcope to 

 be tubular, and different from any thing I have yet met with 

 from our Coafis. I have called it, 



■?\:^xz\\Y\\.Co7'allina tubtdata tenera^ dicbotoma, ^ piijlulofa, 

 iit;. b. B. Dichotomous tubular CoraHine. 



This appears, through the Microfcope, full of Warts and 



Puftules, 



