158 



At the meeting held at Bradford, in December, — 

 " An Explanation, with Illustrations, of a practical 

 method of determining the qualities of Iron and Steel, 

 and the hardness of the latter," by the Rev. W. Scoresby, 

 D.D., F.R.S — ''On a series of Experiments made upon 

 Iron, manufactured by the hot and cold blast," by William 

 Graham, Esq., Milton Iron Works, and " On the Geome- 

 trical Principles of Gothic Tracery," by W. Wallen, Esq., 

 F.S.A. 



At the meeting held at Halifax, in March — " On render- 

 ing available for Agricultural Purposes, a variety of substances 

 and refuse from Mines, hitherto considered of no value," by 



H. Briggs, Esq., Overton " Observations upon certain 



Geological Terraces, with some remarks upon Glacial Pheno- 

 mena," by Mr. D. Mackintosh " On the Reciprocal Pro- 

 pelling Powers of Fluids, and certain Rotary Machines 

 upon each other," by B. Biram, Esq., Wentworth — " On 

 the Process of Blasting, by means of Galvanism," by Martyn 

 J. Roberts, Esq., F.R.S.E. 



At the meeting held at Leeds, in June-—" Illustra- 

 tions of the Yorkshire Coal Field," by the Rev. 

 W. Thorp,—" On the Results of Experiments on the 

 Relative Strength of Pig Iron of various qualities, and 

 from different makers, upon bars 12 inches long and one inch 

 square," (second series) by Mr. Chas. Todd, Leeds, — " On 

 the Advantages of Mechanical Force over the Power of 

 Rarefaction in Ventilating Mines and Buildings," by Mr. 

 William Fourness, Leeds, — " On Pumps, for Mining and 

 Engineering Purposes," by H. Hartop, Esq. 



An Extraordinary Meeting was also held at Doncas- 

 ter, on the 3rd of August, in connexion with the 

 annual meeting of the Yorkshire Agricultural Society, at 

 which a Paper was read by the Rev. William Thorp — " On 

 the Best Modes of Judging of the Fertility of Soils." 



