46 DUBLIN NATTEiL HISTOET SOCIETY. 



when the Trtchomanes was discovered in a locality north of the county of Cork. 

 The hill on which it grows is situated on the confines of Cork and Limerick, and 

 is composed of conglomerate. It displays a curious formation, as if the whole 

 hill had been split, and one half sunk considerably below the other. The per- 

 pendicular face of the rock thus exposed is much disintegrated, and shows many 

 horizontal fissures, in one of which, on pulling aside a tuft of withered ferns, the 

 Trichomanes was discovered in considerable luxuriance. A remarkable feature 

 was the dryness of the spot. The altitude of the mountain was about 1000 feet. 

 The Ophrys musciferawas found in a bog, between Ballitore and Athy, county 

 of Kildare. 



DECEMBER 10, 1851. 



RECORD or STENOGRAMHE INTERRDPTA IN CORK. 



Dr. Harvey made some remarks on the addition to the marine algae of this 

 country of the extremely rare and beautiful sea- weed, Stenogramme interrupta. 

 Dr. Harvey had recently received specimens ofthe plant which had in the month 

 of September last been taken up in a dredge in Cork Harbour. The genus Ste- 

 nogramme was originally established by l3r. Harvey, in 1836, from a specimen 

 that had been found by Dr. Sinclair at St. Francisco, California, during Beechy's 

 voyage. It is characterized from all other alga) by the remarkable form of the 

 conceptacles, which assume a nerve-like line through the entire of each lacinia; 

 on this character the generic name Stenogramme was founded, and the specific 

 Californicum from the station of its discovery. The European species of Ste- 

 nogramme interrupta having been first found by Cabrera at Cadiz, was pub- 

 lished in 1823 by Agardh, as a Delesseria, the linear conceptacle having been 

 mistaken for a nerve; hence Agardh called the species Delesseria interrupta. 

 This probably might have passed unnoticed were it not for the interesting and 

 extremely important discovery by Dr. Cocks of Plymouth, in 1846, of this plant, 

 on the shore of Bovisand, where it was not unfrequently cast up, and subse- 

 quently, in 1847, by the Rev. W. S. Hore, on the shore near Mount Edgecombe, 

 which satisfied Dr. Harvey of the true characteristic of the plant. The obser- 

 vations of the Rev. W. S. Hore, who had found a barren specimen, destitute of 

 the supposed nerve, proved that the raised linear line was only common to the 

 fertile frond. In 1848 it was discovered at Minehead, Somersetshire, by Miss 

 Gilford, author of a popular Introduction to Marine Botany, and now, Septem- 

 ber, 1851, it has been added to the list of Irish Algae by Mr. Isaac Carroll of 

 Cork. The specimens first alluded to were found among rejectamenta, or cast 

 on shore, but the Irish specimens were far more interesting, having been ob- 

 tained by Mr. Carroll by means of the dredge, in four to six fathoms of water, 

 where they were brought up, growing on stones. These plants are in a very per- 

 fect state, some having the conceptacular fruit, which, as before observed, is 

 commonly produced, and some having sori of Tetraspores, which have been 

 rarely met. At the time ofthe publishing the " Phycologia Britannica," the con- 

 ceptacles were described as containing a dense mass of minute spores. The Te- 

 traspores were then unknown, but were discovered in the present year by Dr. 

 Welwitch, in the Tagus, below Lisbon, and are described by Dr. Montague in 

 the "Annals of Natural History" for June, 1851. This account had scarcely 

 been published when Dr. Harvey received magnificent specimens in both states 

 of fruit from New Zealand, which discoveries led to the belief that it is doubtful 

 whether Stenogramme Californicum be more than a variety. It is singular to 

 see the curious distribution of one species — California, Cadiz, Lisbon, Ply- 

 mouth, Minehead, New Zealand, and now, the most interesting of all, the har- 

 bour of Cork. For the latter discovery Mr. Isaac Carroll, of Cork, deserves the 

 merit, a zealous young naturalist, whose energy is ardently directed both to 

 zoology and botany. 



