nature that it is a matter of very little confequence. C. frigida covers the ground 

 generally in irregular patches two or three inches in diameter, of a rather pale 

 green color, very flightly adhering to the foil, and if examined while growing, is feen 

 to form feveral ftrata of loofe unconnected filaments. Its mode of ramification is 

 not altogether dichotomous, but it rather feems to throw out a feries of alternate 

 branches inning at acute angles with the ftem. The filaments are hardly fo large 

 as human hair; their length is probably about an inch, but this, from their 

 matted mode of growth, cannot certainly be detected ; they are very flaccid, and 

 when the plant is taken up, fall together, but are wholly deftitute of lubricity, fo 

 that after they are dried, they neither adhere to paper or glafs. In this (late they 

 turn to a pale yellowifh green. The capfules which D.Turner and myfelf firft found 

 in a field adjoining the ruins of Burgh Caftle, muft be confidered very rare, from 

 their having efcaped the notice of Dr. Roth, and his indefatigable friend Profeffor 

 Mertens •, they are but thinly fcattered over the filaments. Even under the 

 higheft powers of a microfcope the frond exhibits no appearance of any tendency to 

 articulation. Dr. Roth, in the fecond volume of his Cataletta, page 217, defcribes 

 a fpecies under the name of C. arenaria, which, at firft fight, he fays may be 

 taken for C. frigida. I have not at prefent feen this, though I hope hereafter to 

 be able to add it to the Britifh catalogue, having no doubt but that many more 

 Conferva: will be found growing on the ground which have at prefent efcaped 

 our notice. 



A. C. frigida, natural fize. 



B. Ditto magnified 1. 



