52 
substance, which passes through the whole. We are not 
sure that this is the true P. miralilis of Linnaeus, as the 
figures quoted will not allow us to be so. It is apparently 
very rare as British; for I do not know of any but the one in 
our possession dredged up by Mr, Simmons off Inch-Keith, 
and presented to me by James Brodie, Esq. F. L. S. 
