154 
PROCEEDINGS OF SOCIETIES. 
March 28th. — Microscopical Meeting. Mr. J. J. Sewell, Vice- 
President, in the chair. 
Mr. Wonfor announced the receipt, for the Society’s herbarium, 
from Mr. G. Davies, of another lichen new to Sussex, Leciclea mcestula, 
found by that gentleman near Billingliurst, and previously found by 
the Eev. J. Crombie near Lyndhurst, New Forest ; and for the cabinet, 
from Mr. T. H. Hennah, of the palate of Tritonia Hombergii, said by 
Forbes and Hanley to be rare. A couple were taken alive, inside a 
scallop, to Mr. Hennah, who supposed they were dredged up with the 
scallops, as they were said to be inhabitants of deep water, and to fre- 
quent scallop-beds. 
Votes of thanks were given to the donors. 
Mr. Hennah, remarking on the minutes of the previous meeting, 
said he wished to qualify what he had stated about the potash mode of 
obtaining palates, which was admirable when comparison or identifica- 
tion was the object, but for palates which were to be mounted, no plan 
was better than dissection. 
Mr. Wonfor announced that their friend Mr. T. Curties had very 
kindly sent down for examination a box of slides, including some very 
choice diatoms, mounted by Muller, and which were from a collection 
of Moller’s, from Baker’s, Holborn. He had brought down for distri- 
bution a number of specimens of Cydostoma elegans and Clausilia nigri- 
cans ; a couple of packets of loam, one from above and the other below 
the Wealden building-stone, and sent to Mr. Onions by Mr. Grantham, 
who wished some of the microscopists to examine it for vegetable sub- 
stance. That afternoon he had received a letter from Mr. Gwatkin, 
and a bottle containing living creatures taken from the supply cistern 
of the kitchen boiler of Mr. C. Buckwell’s house. It appeared “ that 
since an alteration in the connecting pipe of the boiler and supply 
cistern, by which the temperature in the latter was reduced to luke- 
warm, these creatures from time to time made their appearance The 
cistern was of cast iron, with tightly-fitting metal top. At first a little 
fine dust was seen on the surface, and, in a day or two after, the 
creatures themselves.” Before coming down he had examined some, 
and found they were a species of Thysanuridfe (Spring-tails), which 
lived on the top of water. He fancied they were conveyed to the 
supply cistern from without. If the members present would look at 
one under the microscope, they would see the peculiar spring under 
the tail, whence the name. One evening in the previous week, while 
examining “ battledore ” scales, to see whether he could confirm Dr. 
Anthony’s idea of the marking being tubercles on the ribs, he fortu- 
nately got some scales to stand on end, when he was able to see the 
tubercles standing out clear from the ribs. He had made a cork 
model of what he had seen, which illustrated their knobs, and pedicles, 
but not their bases. He was satisfied Dr. Anthony was right in the 
main ; but scales taken from fresh-killed specimens should be exa- 
mined, as in drying they had a tendency to become flattened. 
Mr. F. E. Sawyer exhibited a block of indurated Portland stone, 
which was found by a mason in cutting a stone step, and pronounced 
by him to be a flint. He showed it to Mr. Wonfor, who considered it 
