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allied species. Mr. Hugh Findon showed a series of 
flelix, exhibiting gradations in contour. Mr. Montagu 
F. Hopson, F.E.S., exhibited a series of Zurymus hyale 
(Linn.) &. hyale var., helice (Stephens), and Z. kirbyt 
(Lewis). Mr. A. R. Gillman, F.Z.S., exhibited and 
made remarks upon a Bluethroat (Cyanecula suecica, 
Linn.), and a Hampstead Tree-creeper (Certhia famil- 
aris, Linn.). Dr. J. W. Williams, F.L.S., showed a 
Gymnoblastic Hydroid, 7udbularza larynx (E. and S.), 
and described its structure and life-history, and he also 
exhibited a T.S. of the foot of Helix aspersa (Linn.), 
Sir Samuel Wilks, F.R.S., exhibited on behalf of Mr. J. 
E. Whiting, specimens of the Mining Bee (Axdrena 
fulva) found on Hampstead Heath, and read a short 
note about them. Mr. Basil W. Martin, F.Z.S., 
M.B.O.U., read a paper entitled ‘Feathers: Their 
Structure and Uses,” illustrated with diagrams and 
microscopical preparations. 
Friday, 14th November, 1902. Sir Samuel Wilks, 
Bart., F.R.S., in the Chair. 
Mrs. Beach exhibited a collection of Mosses, the 
majority being British, and made some remarks upon 
them. Mr. K. I. Marks, F.R.M.S., showed Syucheta 
pectinata (Ehr.), and read a note on this rotifer. Mr. 
Hugh Findon exhibited a collection of Hampstead 
Mollusca, made by him in 1902, and enumerated twenty- 
three species of snails and slugs as the first part of his 
list of Hampstead Mollusca. Dr. J. W. Williams, 
F.L.S., exhibited under the microscope a section through 
the digestive gland of Helix aspersa (Linn.), and drew 
attention to its structure and functions. He stated that 
the functions of this gland were very complex, and that the 
name, ‘‘hepato-pancreas,” given to it by some authors, did 
not sufficiently describe it. It was a maker of glycogen, 
a storer of calcium phosphate, and a secretor of a pro- 
teolytic ferment, which was similar to, if not identical 
