452 



Fresh- Water Algoe of Canada. 



The third figure (p. 454) represents a branched filament of the 

 whorls, and is one of tbe most characteristic specimens selected 

 from several equally proliferous and similarly branched. The di- 



—. L~' 



\ ran 



X. t v 



Fig. 1. 5. moniliforme. Branch, natural size. 



chotomous branching of the main filaments with the secund 

 tendency of the extremities is very obvious. Some filaments are 

 even more secund and more proliferous towards the extremities 

 than this one ; no two are indeed alike. They present to the eye 

 under an object-glass of 400 diameters, objects of great variety of 

 form and exceeding beauty. In some cases the cells are much 

 more swollen, and have more of the club shape than those of the 

 figure (3) ; others again are less moniliform. The mucous character 



