172 
The following papers and communications have been read 
at the ordinary and sectional meetings of the Society during 
the session now closing : — 
October Ath, 1870. — “On Convertent Functions,” by Sir James 
Cockle, F.R.S. 
“On the Victoria Cave Exploration,” by W. Boyd Dawkins, F.R.S. 
October 10th, 1870. — “On the Variations of Abraxas Grossu- 
lariata,” by Mr. Joseph Sidebotham. 
October IDA, 1870. — “On a large Meteor seen at Keswick, 
August 15th, 1870,” by G. V. Vernon, F.R.A.S. 
“Observation of the Occultation of Saturn, September 30th, 
1870,” by Mr. James Fellows. 
October 18 th, 1870. — “On Sun-spot Curves,” by Professor Bel- 
four Stewart, F.R.S. 
“ On recent Spectroscopic Investigations of the Solar Atmos- 
phere,” by Mr. Lockyer, F.R.S. 
“Account of an Examination of Offa’s Dyke,” by W. Boyd 
Dawkins, F.R.S. 
“ On the Action of Sulphuric Acid on Diallyl,” by W. R. Jekyll, 
Dalton Chemical Scholar in Owens College. Communicated by 
Professor Roscoe, F.R.S. 
November ls£, 1870. — On the Changes in the Magnetic dip during 
the Aurora of October 25th, 1870,” by Dr. J. P. Joule, F.R.S. 
“On the Aurora Borealis of October 25th, 1870,” by T. T. 
Wilkinson, F.R.A.S. 
“ On the Position of the Centre of the Corona of the Aurora of 
October 25th, 1870,” by J. Baxendell, F.R.A.S. 
“ On a Method of Taking Casts of Objects of Natural History,” 
by W. Boyd Dawkins, F.R.S. 
“Notes on Glacier Moraines in Cumberland and Westmorland,” 
by W. Brockbank, F.G.S. 
November 7th, 1870.—“ The Hawthorns of the Manchester 
Flora,” by Mr. Charles Bailey. 
November \bth, 1870. — “On Improvements in Machines for 
Cutting and Paring Heavy Articles of Machinery,” by W. B. 
Johnson, C.E. 
