125 
January 21th, 1873. — “Description of Minerals and Ores from 
Venezuela,” by John Plant, F.G.S. 
February Uh , 1873. — “ On some Specimens of Asterophyllites,” 
by Professor W. C. Williamson, F.R.S. 
“On a large Meteor seen on February, 3, 1873, at 10 p.m.,” by 
Professor Osborne Reynolds, M.A, 
“Note on Meta-Vanadic Acid,” by Dr. B. W. Gerland. Com- 
municated by Professor Roscoe, F.R.S. 
“Experiments on the Question of Biogenesis,” by William 
Roberts, M.D. 
February 1 &th, 1873. — “Account of Improvements in an Air 
Exhausting Apparatus,” by J. P. Joule, D.C.L., LL.D., F.R.S., &c., 
President. 
“ Notes on supposed Glacial Action in the Deposition of Hema- 
tite Iron Ores in the Furness District,” by William Brockbank, 
F.G.S. 
“The Results of the Settle Cave Exploration,” by W. Boyd 
Dawkins, M.A., F.R.S. 
February 2ith, 1873. — “On the occurrence of Unio tumidus in 
the Manchester district,” by Mr. Hardy. 
March 4 th, 1873. — “Monthly Fall of Rain, according to the 
North Rain Gauge at Swinden, as measured by Mr. James Emmett, 
Waterworks Manager, Burnley, from January 1st, 1866, to Dec. 
31st, 1872,” by T. T. Wilkinson, F.R.A.S. 
“ On Ball Discharge in Thunderstorms,” by Mr. S. Broughton. 
“ On Specimens of Iron manufactured by the old Bohemian 
Process, from Hematite Ores in the South of Europe,” by W. 
Brockbank, F.G.S. 
“On a Change in the Position of the Freezing Point of a 
Thermometer,” by J. P. Joule, D.C.L., LL.D., F.R.S., &c., Pre- 
sident. 
“On the Influence of Acids on Iron and Steel,” by William H. 
Johnson, B.Sc. 
March 1 8th, 1873. — “On the Quality of the Water supplied to 
Manchester,” by E. W. Binney, F.R.S., F.G.S. 
“ Observations on the Rate at which Stalagmite is being accu- 
mulated in the Ingleborough Cave,” by W. Boyd Dawkins, M.A., 
F.R.S., F.G.S. 
