176 
January 13th, 1880.— Kadiograph,” by David Win- 
stanley, F.D.A.S. 
January 19th, 1880. — “ On the Occurrence of Silene Gallica 
(L.) and its sub-species in Jersey,” by J. Cosmo Melville, M.A., 
F.L.S. 
“ Bog Butter (Butyrellite), from Co. Galway, Ireland,” by John 
Plant, F.G.S. 
January 20th, 1880 — On the Bainfall adjacent to the Sweet- 
loves Eeservoir, Sharpies, for 1879,” by the Rev. Thomas 
Mackereth, F.B.A.S., F.M.S. 
‘‘A Curious Rainbow,” by E. W. Binney, F.R.S., F.G.S. 
January 27th, 1880.-—^^ On Epidemic Cycles,” by Arthur 
Ransome, M.A., M.D. 
February 10th, 1880. — ‘‘Notes on a bore through Triassic and 
Permian Strata lately made at Openshaw,” by E. W. Binney, V.P,, 
F.R.S., &c. 
February 16th, 1880. — “On the Land and Fresh Water Shells 
of Tasmania,” by Mr. Thomas Rogers. 
“ On Flexible Sandstone,” by John Plant, F.G.S. 
February 2Jfth, 1880. — “ On the Long Period Inequality in 
Rainfall,” by Balfour Stewart, LL.D., F.R.S., Professor of Natural 
Philosophy at Owens College. 
“On a Form of Representing the Velocity at any point of an 
Incompressible Fluid under Conservative Forces,” by R. F. 
Gwyther, M.A. 
“ Notes on some Quaternion Transformations,” by R. F. Gwyther, 
M.A. 
March 2nd, 1880. — “ Results of Observations of the double- 
period Variable Star R Sagitt£e,” by Joseph Baxendell, F.R.A.S. 
March 9th, 1880. — “Notes on the Bi-quadratic Equation 
+ nx^ + ax^±bx + c = 0,” by Robert Rawson, Hon. Member of the 
Manchester Literary and Philosophical Society, Assoc. I.N.A., 
Member of the London Mathematical Society. 
“The ‘ Castel Nuovo’ Lignite Deposit, near Giovanni, Tus- 
cany,” by Watson Smith, F.C.S., F.I.C. 
“ Analysis of the Ash of Wood of two varieties of the 
Eucalyptus Tree,” by Watson Smith, F.C.S., F.I.C. 
