IV CONTENTS OF VOL. XXVI. — TllIUD SERIES. 



Page 



estimating Ammonia, and of a process for separating Lime 

 from Magnesia, when these earths exist in combination with 



Phosphoric Acid 123 



Mr. A. Cayley on certain Results relating to Quaternions. . . . 141 

 Prof. Hare's Correction of an Error in the author's " Strictures 



on Prof. Dove's Essay on the Law of Storms " 145 



Mr. Hopkins on the Mechanism of GJacial Motion 146 



Prof. Faraday on the Ventilation of the Coal-Mine Goaf .... 169 



Dr. Whewell on Glacier Theories 171 



Proceedings of the Royal Astronomical Society 173 



On Electro -Physiology, by M. Matteucci 175 



New Application of Electricity to Surgery 177 



On two new metals, Pelopium and Niobium, discovered in the 



Bavarian Tantalites, by Prof. H. Rose 179 



On the Calcination of Hydrous Oxide of Chromium, by M. 



Kriiger 181 



Preparation of Ferrate of Soda and of Barytes, &c 18^ 



Meteorological Observations for December 1844 183 



. Table 184 



NUMBER CLXXIL— MARCH. 



Prof. Draper's Memoir, Is Capillary Attraction an Electric Phae- 



nomenon ? 185 



Mr. J. Carty's Examination of a Specimen of Diseased Wheat 189 

 Mr. E. Solly's Description of a Chemical Lamp-Furnace .... 190 

 Dr. J. Percy's Notice of a new Hydrated Phosphate of Lime. . 194 

 Mr. Warington on a curious Change in the Composition of 



Bones taken from the Guano 195 



Dr. Stenhouse on a means of detecting Kinic Acid 198 



Dr. A. W. Hofmann's Remarks upon Ohloranil 199 



Prof. Gordon's Account of an Experiment on Stockholm Pitch, 



confirming the Viscous Theorj' of Glaciers 206 



Mr. A. Cayley on Jacobi's Elliptic Functions, in reply to the 



Rev. Brice Bronwin ; and on Quaternions 208 



Mr. J. Napier's Observations on the Decomposition of Metallic 



Salts by an Electric Current 211 



Dr. Whewell's Additional Remarks on Glacier Theories .... 217 

 Sir W. R. Hamilton on Quaternions; or on a new System of 



Imaginaries in Algebra {continued) 220 



Mr. A. W. Williamson on the Decomposition of Oxides and 



Salts by Chlorine 225 



Dr. Stenhouse on some of the Substances which reduce Oxide 



of Silver and precipitate it on Glass in the form of a Metallic 



Mirror 233 



