xiv CONTENTS. 



Page 

 Mr. A. Balten on a Boat-lowering Apparatus 229 



Mr. J. F. Bateman on an Artesian Well in the New Red Sandstone at the 

 Wolverhampton Waterworks 229 



, Description of the Glasgow Waterworks, with Photo- 

 graphic Illustrations taken at various stages of the work 230 



Mr. D. K. Clark on Coal burning without Smoke, by the method of Steam- 

 Inducted Air-Currents applied to the Locomotive Engines of the Great North 

 of Scotland Railway 230 



Mr. Richard Davis, Description of a Patent Pan for Evaporating Saccharine 

 Solutions and other Liquids at a temperature below 180° Fahr 230 



Mr. J. Elder on the Engines of the ' Callao,' ' Lima/ and 'Bogota' 231 



Dr. William Fairbairn and Mr. Thomas Tate's Experimental Researches to 

 determine the Density of Steam at various Temperatures 233 



Mr. Alexander Gerard's experimental illustration of the Gyroscope 235 



Mr. Alexander Gibb, Description of the Granite Quarries of Aberdeen and 



Kincardineshire 235 



Mr. G. Hart on Gas Carriages for lighting Railway Carriages with Coal-gas 



instead of Oil 235 



Mr. Andrew Henderson on Indian River Steamers and Tow Boats 235 



Mr. Henry Johnson on a Deep-sea Pressure Gauge 236 



Dr. J. P. Joule on Surface Condensation 236 



Mr. Kettie on a Submarine Lamp 236 



Abbe Moigno on a New Gas-burner 237 



. . on an Automatic Injector for feeding Boilers, by M. Giffard .... 237 



on a Helico-meter, an Instrument for measuring the Thrust of 



the Screw Propeller 237 



■ on an Application of the Moving Power arising from Tides to 

 Manufacturing, Agricultural, and other purposes ; and especially to obviate 

 the Thames Nuisance 237 



Vice-Admiral Moorsom on the Performance of Steam-vessels 237 



Admiral Paris on the Manoeuvring of Screw Vessels .., 240 



Mr. W. J. Macquorn Rankine, Condensed Abstract of a First Set of Expe- 

 riments, by Messrs. Robert Napier and Sons, on the Strength of Wrought 



Iron and Steel 242 



Mr. John Robb on the Comparative Value of Propellers 243 



Mr. Peter Spence on Robertson's Patent Chain Propeller 243 



Mr. G. Johnstone Stoney on the Nomenclature of Metrical Measures of 



Length = 244 



Mr. A. Taylor on the true Action of what are called Heat-diffusers 244 



Mr. Adam Topp, Description of various Models of Fire Escapes, Boat-lower- 

 ing Apparatus, &c 244 



Mr. E. A. Wood on a Mode for Suspending, Disconnecting, and Hoisting Boats 

 attached to Sailing Ships and Steamers at Sea 245 



APPENDIX. 



Mathematics and Physics. 



Sir David Brewster on a remarkable specimen of Chalcedony, belonging to 

 Miss Campbell, and exhibiting a perfectly distinct and well-drawn landscape 245 



