182 
“ Note on an Edible Clay from New Zealand,” by M. M. Pattison 
Muir, F.R.S.E. 
“ On the Decomposition of Calcium Sulphate by Alkaline Chlo- 
rides. A contribution to Agricultural Chemistry,” by M. M. 
Pattison Muir, F.R.S.E. 
“ On Some Thionates,” by H. Baker, student in the Owens Col- 
lege. Communicated by Professor C. Schorlemmer, F.R.S. 
November 5th, 1877. — “On the Position and Affinities of the 
Genus Rostellaria (R. Martinii Marrat),” by J. Cosmo Melvill, M.A. 
November \§tli 9 1877. — “ Note on Envelopes and Singular Solu- 
tions,” by Sir James Cockle, F.R.S., Corresponding Member of the 
Society. 
“On the Formation of Hailstones, Raindrops, and Snow-flakes,” 
by Professor 0. Reynolds, F.R.S. 
November 27th, 1877. — “On the Origin of some Ores of Copper 
(Part I.),” by Charles A. Burghardt, Ph.D., the Owens College. 
“ On the Construction of a Room, or Series of Rooms, free from 
Germ Life, proposed for use in the performance of Surgical Opera- 
tions,” illustrated by a model room and apparatus, by William 
Thomson, F.R.S.E. 
December ith, 1877. — “Transit of the Shadow of Titan across 
the Disc of Saturn, November 23rd, 1877,” by Joseph Baxendell, 
F.R.A.S. 
December 1 1th, 1877. — “Note on the Daguerreotype Portrait 
taken of the late Dr. Dalton,” by J. B. Dancer, F.R.A.S. 
“Note on Metallic Niobium and a New Niobium Chloride,” by 
Professor H. E Roscoe, F.R.S., Ac. 
“ On the Retention of Saline Impurities by Hydrated Ferric 
Oxide,” by Mr. Charles Frederick Cross, Dalton Scholar in the 
Owens College. Communicated by Professor H. E. Roscoe, F.R.S. 
December 2Qth, 1877. — “Notice of a Large Boulder Stone at 
Old Trafford, Manchester,” by E. W. Binney, F.R.S., F.G.S., 
President. 
“ On the Geometrical Representation of the Equation of the 
Second Degree,” by Charles Chambers, F.R.S., Superintendent of 
the Colaba Observatory, Bombay. Communicated by J. A. Ben- 
nion, F.R.A.S., A.C.P.S. 
