78 REPORT—1843. 
Calothrix with the Infusoria, in the cavity of a rock on the sea-shore at Cove. As 
there did not appear to be a spring of sulphuretted hydrogen in this district, the 
author attributed the formation of this gas to the decomposition of the sulphates of 
the sea-water in contact with the decaying vegetable matter at the bottom of the 
cavity. 
Mr. Mackay exhibited specimens of the Irish Saxifrages belonging to the Robert- 
sonia or London Pride division, principally with a view of showing the kinds described 
by him in ‘ Flora Hibernica;’ and more particularly to controvert a statement made by 
Mr. Babington, in a paper published by him in the ‘ Annals and Magazine of Natural 
History’ for January 1842, that the Saxifraga umbrosa var. a. Flora Hibernica, the 
common London Pride of the gardens, was not indigenous to Ireland. He showed 
specimens taken from plants found by him on Connor Cliffs, near Dingle, in 1805, 
exactly agreeing with the figure in the Flora of the Pyrenees, by Lapeyrouse, and the 
London Pride of the gardens. He also exhibited specimens of the var. 6, the most 
common appearance of the species on many of the Irish mountains, together with the 
rare and distinct var. y. serratifolia, first found by him in the Gap of Dunloe, in 1805. 
He likewise exhibited specimens of S. hirsuta, Linn., first found by him in the Gap of 
Dunloe; also S. elegans, Mackay, found by him on Turk Mountain, Killarney, in the 
same year with the two last; and four varieties of Sazifraga geum, also first found by 
him in 1805, viz.— : 
a, Leaves hairy on both sides, rather obtusely crenate, scarcely distinct from Robert- 
sonia crenata of Haworth ; the mest common variety of the species in gardens. 
&. Leaves glabrous on both sides, sharply crenate, Rabertsonia dentata, Haw. The 
most common variety on the Kerry and Cork mountains. The first variety is only 
found in low sheltered situations, and is very rare. 
y. Leaves light green, glabrous and shining, Robertsonia polita of Haworth. Found 
on Connor Hill, near Dingle, in 1805. 
3. Gracilis, Mackay. Plant small and slender, like the other rotundato-reniform, very 
small, hairy on both sides; flowers cream-coloured, spotless; scape slender. 
Connor Hill, near Dingle, 1805. 
N.B. All the species and varieties here noticed have been cultivated in the College 
Botanic Garden for nearly forty years, and have not during that time become altered 
in their appearance. 

The Rev. W. Hincks called attention to two living specimens of the Neottia 
gemmipara of Smith. This very rare plant had been discovered by Mr. J. Drum- 
mond, in a salt marsh near Castleton Bearhaven, in the county of Cork, iu 1810, 
From an imperfect specimen, Sir J. E. Smith had described and figured it, and it had 
not been seen again till 1841, when ig was re-found by Dr. Sharkey. Only one spe- 
cimen was again obtained, and it was with difficulty identified with the original spe- 
cimen in the Linnean Herbarium in London, Dr. Wood and Dr. Harvey had, during 
the past week, procured both living specimens, which were now on the table. The 
plant belonged to Smith’s genus Neottia, but was now named Spiranthes. 
Dr. Allman exhibited specimens of a Linaria which he had gathered in Ireland. 
He believed it to be a new species, and had described it at a meeting of the Royal 
Irish Academy. It had been supposed to be the Linaria Italica of Treviranus, which 
had also been found in England, but this plant differed in many respects from L. 
Italica. Dr. Allman then exhibited specimens of the very rare Trichomanes speci- 
osum, and also of one discovered by Mr. Andrews of Dublin, which differed from it in 
many points, and which might probably turn out a new species; the principal fea- 
tures of difference that this fern presented were, the possession of bipinnate fronds, 
long bristles, and the triangular form of its fronds: in all these points it differed from 
T. speciosum, 
The Rev. W. Hincks exhibited specimens of abnormal forms in the flowers of 
Fuchsia. He remarked that there were two series; the first, in which the petals, 
sepals and stamens were arranged in fives; the second, in which the sepals were 

