Conferve6e.'] cladophora. 345 



It is a remarkably variable plant. I remember finding a 

 beautiful variety of it in the pool of a little cascade at 

 King's Cove, Arran. The filaments were simple, not tufted, 

 of a fine delicate texture, and having, when dried, a soft, 

 silky, glossy appearance, such as Cladophora gracilis often 

 has. The most beautiful specimens of it I ever saw were 

 found by D. L.,jun., at Corriegills in Arran, in the month 

 of September. They were quite of the normal type, beauti- 

 fully tufted, of a lively green, and retaining all their beauty 

 when dried. The time for getting it in the greatest beauty is 

 in early summer, when it is in a young state, or in the 

 autumn, when it sometimes assumes a fresh dress after the 

 scorching heat of summer. 



Mr. Hassall, in his 'British Fresh-water Algae,' says: — 

 *' Notwithstanding that its usual resort is the stream and the 

 waterfall, it will flourish and increase in size amazingly for 

 weeks and months in a vessel, the water of which is occa- 

 sionally renewed. I have thus kept it for many weeks, 

 removing (when by its growth it had filled the vesssel) all 

 but a small portion of it ; this, howeVer, speedily increased, 

 and again filled its dwelling-place. The tearing away of 

 portions of the plant in no way impaired the vitahty of the 

 remainder, as from its aggregation of minute cells, each the 



