XIV. ALG^. 



969 



Sargamim nutans. Branch bearing floating bladders. 





:*-^!k 



mm tullosa. Porbion oJ 



frond on wliioll tbe cells divide to 



give birth to the zoospores. 



Ulva bullosa. Portion oJ frond, 

 older, showing the empty cells. 



Lessonia fuscescens (l-30th natural size). 



Zoospore^"aring four hairs. Lamiaaria sacdiarina (l-30th natural size). 



