1896.] The Development of Nemalion. 347 
patie common form of sporeling or protonema; three 
g 5. Characteristic filamentous sporeling or protonema; five 
Fig. 6. eed protonema with hair cell, a; seven days old. 
400. 
Fig. 7. Filamentous protonema showing origin of branch, a; nine 
days old. X 400. 
ig. - lamentous aegis with branching process, a, further 
developed; nine days o 
Fig 9. Protonema forming flat expansion of cells; ten days old. 
g. Io. ae with seven branches forming flat expansion on 
oh shell. x 4 
Plate XXVI. 
Go. a of frond crushed to remove extra filaments and tip 
chl 
ui. 12. Detail of typical lateral or tip fascicle of mature frond. 
Me 
ts Filamentous growth from sporeling showing first indica- 
ion’ of ichotomous branchin ng. X 240. f. 
ig. 1 Ider sporeling or “chantransia” stage, with aan ons 
cle of branchlets may well developed rhizoidal branches. X h 
ig. 15. Chantransia seis advanced than the seep ‘wit BEY: 
‘tal rhizoida) branches. xX 240. 
‘te I-9 from nature, with Abbé camera. Material under cultivation 
Fig. 0 from peer ith Abbé camera. Material on barnacle shell. 
Fig. 13-15 wit AbbS cacsire: Material cultivated in 1894 by Dr. Setchell 
aad preserved in pie ie 
