298 PROCEEDINGS OF SOCIETIES. 
Carrig Mountain. For the present, therefore, Mr. Archer felt 
he must regard this form not as Huastrum circulare (Hass.), nor 
as any variety of that form, but as Hwastrum sinuosum (Lenor- 
mand). 
Mr. Andrews showed crystals of sulphate of iron. 
Dr. Frazer exhibited curious little globules obtained from coal 
ash by Mr. Dancer, and found in furnace dust; they formed a 
remarkable object. 
Dr. Moore showed Monormia intricata from the Botanic 
Garden. 
Rey. E. O’Meara showed a new Pinnularia from Arran, which 
will appear with a figure in this Journal. 
Mr. Archer again showed a sample of that elegant rotiferon, 
Conochilus volvox, taken from the “ Rocky Valley.” On the pre- 
vious occasion that he had found this fine species the specimens 
were met with near Carrig Mountain. 
June 20th, 1867. 
Dr. Moore exhibited the elaters of Marchantia, elucidating there- 
by the exceptional but not unprecedented occurrence of spiral fibre 
in the cells of Cryptogamic plants, and pointing out at same time 
that an acquaintance with such objects was necessary to those 
whose researches were mainly confined to aquatic organisms, as 
not unfrequently these bodies may be found presenting themselves 
in water at the risk of being mistaken for something independent. 
Dr. J. Barker exhibited hairs of shrew-mouse. 
Rey. E. O’Meara exhibited a new Triceratium from the Arran 
gathering; also a peculiar five-sided form of Amphitetras antedi- 
luviana, thus proving that the number of sides is really a charac- 
ter of but slight value or importance. Figures of the forms 
shown by him will appear in this Journal. 
Mr. Archer showed a minute alga new to Britain, Cosmocladium 
Saxonicum, de Bary. This had been taken by him on a recent 
hurried visit to North Wales, and was found in a pool close by a 
little lake called Lake Elsie, near Bettws-y-Coed. He referred to 
de Bary’s account of this little plant, and exhibited his figure 
from the ‘ Flora’ (No. 21, 1865). This is so accurate that there 
could be no doubt whatever as to the identity of the present 
plant with that of de Bary, being alike in form of cells, ar- 
rangement of contents, nature of stipes—all. There may, how- 
ever, be a question that this plant is actually distinct from 
Cosmocladiam pulchellum (Bréb.), for the differences may be but 
seeming, owing to de Brébisson haying most probably mistaken 
