CONTENTS OF VOLUME HI. 
Page. 
Meeting at Wakefield, March 8th, 1849— 
" On the Fossil Flora of the Carboniferous Epoch, with especial 
Reference to the Yorkshire Coal Field," by Mr. Henry Denny, 
A.L.S., of Leeds I 
" On Improvements in the Galvanometer, and on the Comparative 
Economy of various Voltaic Arrangements," by W. Sykes 
Ward, Esq., of Leeds 38 
" On a Remarkable Boiler Crust, composed of Sulphate of Lime," 
by Wm. West, Esq., F.R.S., of Leeds 59 
Meeting at Doncaster, August 29th, 1849 — 
" On the Formation and Destruction of Limestone, and some of the 
Minerals which accompany it," by James Haywood, Esq., of 
Sheffield .* .". 61 
" On the Growth and Manufacture of Chicory," by George Wilkinson, 
Esq., of Broom Hall, near Sheffield 75 
" On Milk, as an Agricultural Production and an Article of Food," 
by James Haywood, Esq 78 
"On Ivory, as an Article of Manufacture," by George Dalton, Esq., 
of Sheffield 87 
" On the Growth of Wheat in Relation to Climate and Temperature," 
by the Rev. William Thorp, of Misson 98 
Meeting at Halifax, June 6th, 1850 — 
Address of the Chairman 109 
" On a new and cheap Voltaic Battery for the production of the 
Electric Light," by Mr. Christopher Leefe Dresser, of Leeds ... 110 
"On some Phenomena of Dia- Magnetism, with Experiments," by 
William Sykes Ward, Esq., of Leeds 114 
Meeting at Barnsley, October 29th, 1850 — 
Statement of Accounts 138 
" Comparative View of Circumstances attending some of the Explo- 
sions in Coal Mines," by William West, Esq., F. R. S., Assoc. 
Civ. Eng., of Leeds 138 
