of Keratophyta. 5*5? 



Specimens of a very young Growth, viz. 2 or 3 Inches high 

 have the Appearance of a fmall calcaneus Sprig. When this 

 is differed length-ways, and viewed with Attention, we find 

 in the Centre, a {lender horny Tube, with fome whitiOi 

 Matter in it Hke Pith ; next to this Tube are other very fmall 

 Tubes of a calcarious Subftance, that adhere to it, and fur- 

 round it, covering over even the Point of the Top. 



In more advanced Specimens, where they branch out, 

 thefe fine calcarious Tubes fend out little Cells of Animals ot 

 the Polype kind, with proper Openings to them all. Thefe 

 Cells are difpofed along the Branches always in fome regular 

 Order, with great Exadnefs, according to the particular 

 Species ; not like the Nefts of Infeds on Plants, which arc 

 accidentally placed here and there ; and which many ima- 

 gine them to be ; but in much the fame prccife Form and 

 Manner, that we obferve in the Cells of the Corallines. 



From thefe Cells the Animals have been difcovered ex- 

 tending themfelves, as well to procure Food for themfelves, 

 as Materials for the Increafe of this fuprizing Strudure : But 

 this will be made clearer to us from fome following Obfer- 

 vations. 



When Infeds infefl; a Vegetable, to devour its Leaves, 

 and build their Nefts upon its Trunk and Branchs, they are 

 rarely obferved to cover the whole Bark from the Bottom of 

 the Trunk, to the utmoft Extent of its Ramifications : But, . 

 admitting this fhould happen to be the Cafe, I believe it will 

 be allowed, no-body ever faw Plants, fo totally incrufted over 

 with the Cells of Infeds, live and flourifh after. It has been 

 generally remarked, that real Sea-vegetables, of which there 

 are a confiderable Variety, are as much fubjed to be attacked 

 by different kinds of Sea-Infeds, who build their Nefts on 



I 2 them, 



