IV CONTENTS. 



Page 



Dr. J. Apjohn on the Potatoe- Spirit Oil of the French Che- 

 mists 86 



Observations on the Climate of Italy and other Countries in 



ancient times * 92 



Mineralogical Notices. Communicated by Prof. Miller 102 



Dr. Theodore Scheerer's Observations on El&olith and Nephe- 



line 105 



Dr. Kane on the Theoretical Constitution of the Compounds of 



Ammonia 1 20 



Mr. E. A. Parnell on the Composition of Inulin 1 26 



Mr. C. T. Coathupe on certain Effects of Temperature 130 



Mr. R. Thomas's Remarks on some Tide Observations, published 



in the Transactions of the British Association 134 



Mr. Gulliver's Observations on the Blood Corpuscles, or Red 



Particles, of the Mammiferous Animals 139 



Proceedings of the Royal Society 142 



. . Geological Society 149 



Royal Irish Academy 153 



Cambridge Philosophical Society 154 



Urine of the Elephant 156 



Delvauxine 156 



On the Reduction of Potassio-chloride of Platina 157 



Dr. Barry on the Corpuscles of the Blood 157 



Acechlor-platina 157 



Nitrites formed by direct Combination 159 



Meteorological Observations for June, 1840 159 



Table.. 160 



NUMBER CIX.-SEPTEMBER. 



Mr. Griffith's Reply to that part of Mr. Weaver's Paper re- 

 lative to the Mineral Structure of the South of Ireland, which 

 has appeared successively in the Numbers of the Philosophical 



Magazine for April, May, and June, 1840 161 



M. Dumas's Memoir on the Law of Substitutions, and the 



Theory of Chemical Types (concluded) 179 



Mr. A. Smee on the Ferrosesquicyanuret of Potassium 193 



Mineralogical Notices. Communicated by Prof. Miller (con- 

 tinued) 202 



Mr. R. Hunt on the Use of Hydriodic Salts as Photographic 



Agents 202 



Mr. S. Woods on the Anthracite Coal of South Wales 211 



Mr. A. Crosse on the Tension Spark from the Voltaic Battery 215 

 Dr. Draper on the Process of Daguerreotype, and its appli- 

 cation to taking Portraits from the Life 217 



Proceedings of the Geological Society 226 



