288 
The Natural Hiftory of the Book IX. 
The SEa-FEATHERS. 
ee ee {eldom grow, on the Shores of this Ifland, above two Feet 
- and an half high; they likewife feldom or never differ in_ their 
Make or Texture, being each compofed of a ligneous horny Subftance, 
and beautifully reticulated. Some are of a darkifh Colour, and others of 
a light Grey: I obferved fome of the latter to have their Edges bordered 
with a faint Yellow, flightly tinged with Green. 
The INcrusTED Sea-Robs. 
HESE are always in Bunches, feldom growing above four Feet 
high; their many Branches {pring from one common Stalk, very 
near the Root: Thefe are almoft all of a Size, in Length and Thicknefs ; 
and. the Outfide covered with a calcareous Cruft, of about the 
Thicknefs of an Exgli/b Shilling. The Surface of this is pitted with many 
very {mall Star-like Holes. This is delineated in Plate XX VII. Fig. 1. 
The SmaLyu IncrustED SEA-Rop. 
hee feldom growsabove a Footand an half high; and its Surface, in- 
_ dL” ftead of being, as the laft-defcribed, covered all over with a thin 
‘pliable calcareous Cruft, is here-and-there annulated with irregular 
knotty Bandages, of a white coralline Subflance, refembling the {mall 
Star-Coral. This Kind of Sea-Rod branches very little, and its Branches 
are but very flender, 
