PROCEEDINGS OF THE CONCHOLOGICAL SOCIETY. 205 
also, from Antigua, a child’s necklace made from the shells of Zellina 
similzs, and two brooches for which had been used the shells of WVevztina 
wividis, Oliva oryza, and Trivia quadripunctata. 
After considerable discussion it was resolved that the Secretary notify 
the members who usually attend the meetings, that it is proposed to alter the 
time and date of the ordinary meetings to 6-30 p.m., on the second Thurs- 
day in each month, and that such alteration shall be voted on at the next 
meeting to be held on Wednesday, April Ist. 
LEEDS BRANCH. 
MEETING, JANUARY IIth, 1896. 
At Huddersfield, by the kind invitation of Mr. J. Whitwham. 
Mr. Wm. Nelson in the chair. 
Mr. John E. Edwards, Leeds, exhibited specimens of Faszs, dredged 
off Whitby, deformed, apparently, by sponge growths. 
Mrs. Brierley, Huddersfield, exhibited examples of Helix virgata var. 
albicans from Redcar, and the two-banded form of A. zzemoralzs common at 
Colwyn Bay, N. Wales. 
Mr. J. W. Taylor showed specimens of 4. Azsaza from Spain; Mr. T. 
S. Hillman sent #. virgata var. alba from Lewes ; and an interesting series 
of A. cartusiana from the same locality. Mr. A. G. Stubbs sent a collection 
of nearly one hundred modifications of A. wzz-gata which he had collected 
within a short distance of Tenby. A descriptive catalogue and photographs 
of the localities where the specimens were collected, accompanied the 
collection. 
Mr. J. Whitwham exhibited and described his extensive collection of 
British Land and Freshwater Shells; the collection of Uzionide being 
exceptionally fine. Mr. Whitwham’s principle of mounting is to display, if 
possible, on one tablet, the type and its variations from one pond or circum- 
scribed locality ; a method which enables the student to grasp the evolution 
of varietal distinctions. 
MEETING, FEBRUARY 22nd, 1896. 
At Leeds, by the kind invitation of Mr. Crowther. 
Mr. Wm. Nelson in the chair. 
Mr. W. Denison Roebuck showed specimens of Lzmax flavus var. 
riifescens, sent by Mr. Alfred Leicester, from Bush Poultry Farm, near 
Harlow, Essex. For Mr. F. B. Whitlock, shells of Azodonta cygnea, found 
in Nottinghamshire, on an island in the River Soar, which were bitten all 
round the edges, probably by otters, as the banks of the island drop sheer 
four feet, too high for smaller mammals. 
Mr, Henry Crowther read a paper on ‘‘ Some Chemical and Physical 
Properties of Molluscs.”” The experiments included the effects of running 
water on Spherium corneum ; the polarisation of calcite in the embryonic 
