(54) 



has no claim to be considered a native of this country ; indeed it has 

 never been really published as such, but only in the hope that it might 

 prove to be so, by its being found to be a native of some of the 

 remote bays of some of our noi-thern islands. Of this we fear, however, 

 there is little hope, as all the fragments that have hitherto appeared 

 on our shores have evidently been stray waifs from a far country. 



It is said to be abundant along the northern shores of Asia, Norway, 

 the Faroe Isles, and North America. On those of the Old World, how- 

 ever, it seems to become scarce after entering the temperate zone, while 

 on the shores of America it does not reach its southern limit till it has 

 reached Cape Cod in the United States (Phyc. Brit). In the present 

 species the roots are much more slender than those of the last, although 

 the plant itself is larger, but the long flexible stem of this species enables 

 it to follow the motion of the waves with but little strain on the root, 

 whilst in L. hulhosa the short stifi" stem and large broad frond produce 

 a powerful side strain on the root with every heave of the tide ; hence 

 also the thin delicate frond of the present species is less apt to be torn 

 or split up into narrow laciniee. 



1 



lAMINARIA LONGICRURIS. 



EXPLANATION OP DISSECTION. 



Fig. 1.— Portion of the hollow stem of fi-ond. 

 (Reduced from Phyc. Brit. ) 



