CONTENTS. 



Article: Pagb 



I. — On Lightning and Lightning Conductors. By the late Mr. 



William Sturgeon 1 



II On some Peculiarities of the Thunderstorm which occurred in this 



neighbourhood on Tuesday, the 10th of July last. By the late 



Mr. William Sturgeon, Prestwich 23 



ill On the Comparative Value of various kinds of Stone, as Exhibited 



by their Powers of Resisting Compression. By W. Fairbairn, 



F.R.S., &c 



I V.— On the Fusion of Metals by Voltaic Electricity. By J. P. Joule, 



F.R.S., &c 49 



V. — A Short Account of the Life and Writings of the late Mr. William 

 Sturgeon. By J. P. Joule, V.P., F.R.S., Hon. Mem. Phil. Soc. 



Cambridge, Corr. Mem. R.A. Turin, &c 53 



VI. — On, the Solubility of Sulphate of Baryta in Acid Solutions. By 



F. Crace Calvert, F.C.S., M.R.A. Turin, &c 86 



VII — Additional Observations on the Permian Beds of the North-west 



of EDgland. By E. W. Binney, V.P., F.R.S., F.G.S 101 



VIII The Chemical Changes which Pig Iron undergoes during its con- 

 version into Wrought Iron. By F. Crace Calvert, F.C.S., 



M.R.A. Turin, and Mr. Richard Johnson 121 



IX On the 7-partitions of X. By the Rev. Thos. P. Kireman, A.M., 



Rector of Croft-with-Southworth, and Honorary Member of the 



Literary and Philosophical Society of Manchester 1 37 



X. — Remarks on the Occultation of Jupiter and his Satellites by the 

 Moon, January 2nd, 18ft7. By the Rev. Henry Halford 



Jones, F.R.A.S., &c 151 



XI.— Some Peculiarites of the Vital Statistics of the Society of Friends. 



By Alfred Fryer w . 153 



XII — On the Formation of Indigo-blue. Part II. By Edward 



Schunck, Ph.D., F.R.S 181 



XIII — On the Occurrence of Indigo-blue in Urine. By Edward 



Schunck, Ph.D., F.R S 239 



List of Donations i 2oi 



The Council of the Literary and Philosophical Society of Manchester 25S 



Alphabetical List of Members 



Honorary Members 



Corresponding Members , 260 



