920 CRYPTOGAMIA ALG^. 



and hairy within. Thefe ferve to buoy the plant 



up in the water. 

 This Fuciis I have frequently leen ufed by Fifher- 



men to cover their oyfters with, in order to 



preferve them alive and moid. 

 The flalks are often covered with black clufters 



of the Conferva Pclymorpha of Linnaus. Sp^ 



p/. 1636. 

 Boys amufe themfelves with the air-bladders, by 



cutting the larger ones tranfverfely, near the 



end, and making whiftles of them, 

 p. There is a flight variety of this Fucus, having the 



edges of the flalks ferrated. See Gmel. hift^ 



f\icor. tab. i. B. jig, 2. 



hrcus 10. F. fronde filiformi comprefTa dichopma, iindique 

 utrinque tuberculata. Syft. nat. edit. 13. p. Si^i 

 FUCUS elongatus. Sp. pi. 1627. FUCUS 

 linearis. Hudf. Flor. Angl. p. ji^6y. {Ger.-emac^ 

 p. 1568. Jig. 5. Reaumur. a£}. Gall, lyii.p.i^s 

 f. 2. ben. et Gent. Magaz. lys^' P- ^4') 



Long narrow-leav'd Fucus, or Sea Thongs, 

 Anglis. 



We obferv'd it upon the fea-lhores not uncomr 

 mon. VII. VIII. 



This is generally two or three feet long, the 

 thongs or fegments about one-fifth of an inch 

 \vi,^e. The fubftance thick, coriaceous, an4 



opaque, 



