CONTENTS. 



MECHANICAL SCIENCE. 



Page 



Mr. H. Bessemer on the Manufacture of Iron and Steel without Fuel 162 



Mr. W. Clay on the Manufacture of the large Wrought-Iron Gun, and other 



Masses of Iron made at the Mersey Iron Works, Liverpool 162 



Major V. Eyhe on the Application of Corrugated Metal to Ships, Boats, and 



other Floating Bodies 162 



Dr. Greene on a Method of uniting Iron with Iron or other Metals without 



welding, invented by M. Sisco of Paris 162 



on a New Railway Break, invented by M. Sisco of Paris 162 



Professor Hennessy on the Inundation of Rivers 162 



Mr. F. M. Kelley's Explorations through the Valley of the Atrato to the 



Pacific in search of a Route for a Ship-canal 162 



Mr. \V. A. Mackfie on the Patent Laws 164 



Mr. R. Methuen on the Management of Mercantile Vessels 164 



Dr. SiBBALD (Livei-pool) on a New Plan for a Ship Communicator 164 



Mr. W. Smith on Improved Mechanical Means for the Extraction of Oil, and 

 the Economical Manufactm-e of Manm-es from Fish and Fishy Matter .... 164 



Mr. George Rennie on the Quantity of Heat developed by Water when 

 violently agitated 16-5 



's Experiments to determine the Resistance of a Screw 



when revolving in Water at different Depths and Velocities 169 



APPENDIX. 



Mr. Samuel Highley on Crystallogenesis, and the Equivalent in the Mineral 

 Kingdom corresponding to Geographical Distribution in the Animal and 

 Vegetable Kingdoms 172 



Mr. J. B. Lawes and Dr. J. H. Gilbert on some points connected with Agri- 

 cultural Chemistry 172 



on the Composition of Wheat-Grain, 



and its Products 173 



Mr. Henry Dar-\vin Rogers on the CoiTelation of the North American and 

 British Palseozoic Strata 175 



Index 187 



