8 THE MARINE BOTANIST. 



of an oblong- cell, borne on jointed threads termed 

 paranemata ; each antheridiumy or cell, is filled 

 with minute orange-coloured bodies, closely re- 

 sembling the zoospores of the lower algae, and, 

 like the latter, are endowed with spontaneous move- 

 ments. The organs of motion are the same — 

 vibratory hairs or cilia, two of which are attached 

 to each. These details the reader will observe 

 cannot be verified without an appeal to the micro- 

 scope. The majority 



" Of ocean weeds heaped on the surf-beaten shore." 



belong to this tribe, for all along our shores the 

 Fuci grow associated together in dense masses, 

 and constitute the prominent feature of sea-side 

 vegetation. Kelp is largely manufactured from 

 them, and this in turn yields several products, such 

 as saltpetre, iodine, pearlash, &c.* The genus 

 Lichina, which was formerly placed after this 

 tribe, is now included among the true lichens with 

 which the fructification of these plants accords. 



* Vide Appendix, for further account of the products of 

 kelp. 



