CONTENTS OF VOL. XXVL 



(THIRD SERIES.) 



NUMBER CLXX.— JANUARY, 1845. 



Page 



Mr. Hopkins on the Motion of Glaciers 1 



Messrs. Faraday and Lyell's Report to the Rt. Hon. Sir James 

 Graham, Bart., Secretary of State for the Home Department, 

 on the subject of the Explosion at the Haswell Collieries, and 



on the means of preventing similar accidents 16 



On the Purification of the Soluble Salts of Manganese from 



Iron 35 



Mineralogical Notices : — Analysis of the Greenovite, by M. 

 Delesse. Analysis of the Bornine of Brazil (Telluret of 



Bismuth), by M. A. Damour 36-37 



Sir J. F. W. Herschel's Memoir of the late Francis Baily, Esq. 38 



The Rev. Brice Bronwin on Jacobi's Elliptic Functions 75 



Proceedings of the Cambridge Philosophical Society 77 



On Sulphipianic Acid, by M. Wohler 79 



On Sulphopianic Acid 80 



Preparation of Ferrate of Potash 81 



Preparation of Ferrate of Potash in the Moist Way 82 



Hydrated Iodic Acid 83 



Action of Iodine on certain Salts, by M. Filhol 85 



On a New Compound of Sulphur, Chlorine and Oxygen, by 



M. Millon 85 



Meteorological Observations for November 1844 87 



Meteorological Observations made by Mr. Thompson at the 

 Garden of the Horticultural Society at Chiswick, near 

 London ; by Mr. Veall at Boston ; by the Rev. W. Dunbar at 

 Applegarth Manse, Dumfries-shire ; and by the Rev. C. 

 Clouston at Sand wick Manse, Orkney 88 



NUMBER CLXXL— FEBRUARY. 



Mr. Moon on Fresnel's Theory of Diffraction 89 



Lieut.- Colonel Sabine's Report on the Meteorology of Toronto 



in Canada 94 



The Rev. Prof. O'Brien on the Law of Resistance of a Medium 



to small vibratory Motion ; the Mixture of Prismatic Colours ; 



and the Appearance of the Prismatic Spectrum when viewed 



through a plate of common blue glass of proper thickness . . 114 

 Mr. J. D. Smith on the Composition of some varieties of South 



American Guano ; with the description of a new mode of 



a 2 



