PROCEEDINGS 
OF THE 
GEOLOGICAL AND POLYTECHNIC SOCIETY 
m % Mtst gtfMng of fJorhsIjm, 
AT THE SIXTY-SIXTH MEETING, HELD IN THE 
CUTLERS' HALL, SHEFFIELD, ON THURSDAY, MARCH 9TH, 1865, 
AT TWELVE O'CLOCK AT NOON. 
Dr. Aveling in the Chair. 
The Right Hon. the Earl of Harewood having been 
unanimously elected a member, 
The Chairman addressed the Society, and thanked the meet- 
ing for the honour that had been done to the Philosophical 
and Literary Society of Sheffield by requesting him, their 
President, to preside on the occasion; and then called upon 
T. W. Embleton, Esq., of Middleton Colliery, near Leeds, 
to read the first Paper — 
ON THE HYDRAULIC COAL-CUTTING MACHINE. 
After stating the important aid which machinery had 
furnished in lessening manual labour, Mr. Embleton entered 
into a clear and practical explanation of the machine manu- 
factured by Messrs. Carrett, Marshall, & Co., of Leeds, now in 
operation at the colliery of Messrs. Locke and Warrington, at 
Kippax. The paper was illustrated by diagrams and sections 
