OF SOME OF THE MARINE ALG. 103 
dance near the ballast-pond at Torpoint, since which time this 
variety of the plant has entirely disappeared. 
In the same year, the Rev. Mr. Hore and myself found 
several specimens of that very rare and curious plant, Carpo- 
mitra Cabrere, washed up on the shores of Mount Edgecumbe. 
Singular to relate, an interval of sixteen years had elapsed, and 
not a single specimen, save these, had been taken since the solitary 
one that was found by Miss Ball on the south coast of Ireland ; 
and as previously to that occurrence no other specimen had been 
taken, Dr. Harvey has remarked, in his * Phycologia Britannica,’ 
that *this interesting plant is not truly the growth of our own 
shores, but has been wafted hither, as other European productions 
sometimes are, by the influence of currents." This surmise, how- 
ever, proved to be incorrect, as both Mr. Hore and myself, since 
our first meeting with this plant, have on various occasions found 
it washed up on the shore at Mount Edgecumbe, and also at Tor- 
point. In the autumn of the years 1856 and 1857, I succeeded 
in dredging some very fine specimens, growing in seven fathoms 
of water in Plymouth Sound. 
In the month of October 1847, I picked up my first specimen 
of that very rare and interesting plant, Stenogramme interrupta, 
amongst rejectamenta on the shore of Bovisand, near Plymouth, 
—a plant which had never before been taken in Great Britain, or 
perhaps in Europe. In the year 1849, and at various periods 
since, many other specimens have been found washed up on the 
shore. Latterly, however, I have taken with the dredge fine spe- 
cimens of this plant, all growing on stones in six or seven fathoms 
of water. Some years after my first discovery of the Stenogramme, 
it has been dredged by Mr. Isaac Carrol in Cork Harbour. Miss 
Gifford has also found specimens washed on shore near Minehead 
in Somersetshire ; but those I have seen from that locality are 
much broader in the fronds than those taken at Plymouth. 
Gigartina pistillata, also a rare species, had not been found 
in Great Britain since the year 1829, when in 1851 it was re- 
discovered by my friend Mr. Gilbert Sanders, of Dublin, growing at 
Whitsand Bay, near Plymouth. I have since, on various occasions, 
secured other specimens of this plant, and always in the same 
locality, but I do not think any of them were so fine as those 
which were taken by Mr. Sanders. 
When out collecting with Dr. J. W. Budd, of Plymouth, in the 
month of June 1854, we found growing in an obscure place 
amongst the rocks in Firestone Bay, Plymouth, which was only 
12 
