120 
to the Canary Islands and Madeira in the Atlantic Ocean. It is not 
improbable that a diligent search might be rewarded by its discovery 
in the Western counties of England or in Ireland. Its early develop- 
ment and speedy decay should, however, be borne in mind by those 
who may undertake the search.” 
GREENWICH NATURAL-HIstory CLUB. 
Saturday, October 29, 1853.—George Busk, Esq., F.R.S., Presi- 
dent, in the chair. 
Exhibitions. 
Mr. Spurrell exhibited a lacustrine coralline (Plumatella repens), 
found in the neighbourhood of Bexley. The exact locality from 
where it was obtained was a pond at East Lodge Gate, Baldwin, 
Dartford Heath. 
The President exhibited a series of leaves of the bramble (Rubus 
frulicosus), which he had received from many of the midland and 
Southern counties of England, and from Jersey; all of which were 
affected by a disease almost as general as the potato-disease. In some 
counties, as Suffolk, not a leaf but was more or less affected. The 
cause of this disease was a microscopic fungus, the Erigma (Phrag- 
midium) bulbosum of Berkeley; and when magnified it exhibited the 
appearance of a pedicel, supporting sometimes three, sometimes four 
(never more than four) sporidia, surmounted by a kind of button, 
representing an imperfect sporidium. The specimens of Erigma 
found on Rosz, and examined by Mr. Currey, generally possessed 
eight sporidia. It is worthy of remark, that the Herefordshire 
brambles were less affected by the disease than any others. 
November 26, 1853.—George Busk, Esq., F.R.S., President, in the 
chair. 
A paper was read intituled, ‘A Comparison between the Quadru- 
mana of the New and Old Worlds, with especial reference to their 
Nasal Peculiarities, by Cuthbert Collingwood. M.A., F.L.S., Hon. 
Sec. 
