the larger fuci: it is not uncommon about the 
northern parts of the Britifh coafts, and always pre- 
ferves its femicircular fhape. Its texture is much 
{lighter than that of moil: others of this genus, Teem¬ 
ing to confift of fandy particles connected by an 
animal gluten : the cells or cavities, in which are 
fuppofed to reiide the polypes, or fabricators of the 
mafs, are rather large than fmall, and are not very 
deeply impreffed, but rather fuperficial. Its colour 
is a pale yellowifh brown. 
