

v. 



A 



*4 v " ; - 



Fie 21. Sexual reproduction of Fucus. showing the eight eggs (six in sight) Lxy- 

 charged from the oogonium and snrrounded by a membrane {A), eggs liberated 

 from the membrane (E i. antheridinm containing sperms ( C), the discharged lat- 

 erally biciliate sperms (G), and eggs surrounded by swarming sperms (F, H). — 

 After Singer. 



