THE AL6JE. 



117 



of Botany," pp. 263-267 ; Bennett & Murray's " Cryptogamic Botany," 

 pp. 228-236; Dodge's "Practical Biology," pp. 285-296; Bower's "Prac- 

 tical Botany," pp. 391-408 ; Campbell's " Structural and Systematic 

 Botany," pp. 42-48; Bessey's "Essentials of Botany," pp. 144-147. 



FIG. 63. 1, longitudinal section through a female conceptacle of Fucus vesicu- 

 losus, showing oogonia preparing for division and surrounded by paraphy- 

 ses ; 2, an oogonium and several paraphyses more highly magnified ; 3, an 

 oogonium with the egg cells all ready to burst through the surrounding 

 membrane ; 4, the same after the membrane has burst and set the egg 

 cells free. All much magnified. (From Kerner and Oliver, after Thuret.) 



