289 
By the publication of the Reports, the Members are 
from time to time made acquainted with the principal 
labours and proceedings of the Society. The papers that 
have been read during the past year have been in no way 
inferior in interest to any that have preceded them. Those 
which describe the Geology of Yorkshire, or speculate on 
the causes by which its actual condition has been produced, 
or offer suggestions for the improvement of the Arts, 
founded on Geological considerations, are the following : — 
Illustrations of Yorkshire Geology," by Rev. W. Thorp; 
*' Three Reports on the Agriculture of Yorkshire, Geo- 
logically considered," by the same gentleman ; A Report 
on the Geology of the North Midland Railway from Leeds 
to Darfield," by 3Iessrs. Embleton and Morton ; On the 
Mineral Springs of the Parish of Halifax, Geologically 
considered," by Dr. Wm. Alexander ; "On the Vegetable 
Origin of Coal," by Mr. Morton ; " On the occurrence of 
Shells in the Yorkshire Coal Field," by Mr. Hartop ; and 
On the occurrence of Boulders of Granite and other 
Crystalline Rocks in the Valley of the Calder, near Halifax," 
by Mr. J. T. Clay. 
The other communications which have been made to the 
Society have been Mr. Hartop's Observations on the 
occurrence of Titanium in Blast Furnaces;" Mr. Holmes's 
Description of an Ingenious Modification of Upton and 
Roberts's Safety Lamp ; Mr. Todd's " Account of Experi- 
ments on the relative Strength of Pig Iron of various 
Qualities and from different Makers ;" and Mr. Embleton's 
paper " On the Museum of the Society." 
Of these papers, two seem to call for special remark. 
The paper of Mr. Embleton on the Museum contains an 
enumeration of the various objects which it is desirable 
that it should contain, and of the uses which they would 
subserve ; and is intended as a manual, by consultino- 
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