Ea en. Cl Ue Sf ee 
CONTENTS. XV 
‘ Page 
Amiral Sir Epwarp Bricuer on a Mode of rendering Timber-built Ships Im- 
pregnable and Unsinkable under Moderate Crew Power, as in Leaky Vessels 171 
Mr. Rosert Davison on the Decortication of Cereals...........-..+e0 005 171 
—_—_______——- on Improvements in Machinery and Apparatus for 
ienasmp and Purifying Cask ....0 00.608 e seco ecient cere ven ssenceens 172 
Mr. GrorGce Fawcvs on Improvements in Waggons and Gun-Carriages .... 172 
—_—___________— 9n a New Method of Constructing Boats............ 172 
Captain Doveias Gatton’s Remarks on Armour-Plating for Ships........ 173 
Mr. J. Jameson on Air-Engines and an Air-compressing Apparatus ........ 173 
Mr h sinc on Hxtinguishing Wires... 6. ies we eet wejeiee sielk oe wleleleia'e 174 
Mr. D. D. Mary on the Newcastle and Gateshead Water-Works .......... 175 
Mri eAGw on Bridoe Houndations 5.60.6. cages ve oc sami see) evlne ae 176 
Mr. R. A. Pracocr’s New Plan for Hanging Dock-Gates ................ 177 
Professor W1Lt1amM Potn’s Description of the Large Gyroscope used by Sir 
William G. Armstrong in his investigations on Rifled Projectiles ........ 177 
Mr. C. T. Porter on Richards’s Indicator for Steam-Engines ............ 178 
Mr. ID. Pusrtey on Thompson’s Universal Stopper for Bottles, &e. ........ 180 
Professor W. J. Macquorn Ranxinr’s Investigation on Plane Water-lines . 180 
Mr. Grorer Reprorp’s Description of Corrugated Armour of Steel or Iron 
EIS PEW AE oc cca ic ss ope Sah ar Knee mh Rab MALE, Molo Meeld GE ee oe oes 182 
MrmG a hrcrAnos s hitted: Ordrmanco ts cess nee vcs aes ecient ate vies 182 
My. W. H. Rrcuarpson on the Paper Manufactures of Northumberland and 
eT EI eC Tas) Aa tute: ein seael stator take Shay Ley stakal ooWlenhtalmncme Male A MunketeTS aakd 2. * « 183 
Mr. J. Rosrnson on an Improved Manufacture of Biscuits ................ 183 
Mr. E. Satmon’s Reports and Sections relating to Captain B. Pim’s projected 
Transit Route through Central America, showing the modus operandi of 
Surveying in the Forests of that Country .........ceseee een e ene eees 183 
Mr. W. Smiru’s Portable Machinery or Apparatus for Riveting, Chipping, 
&c., the invention of Mr. J. M‘Farlane Gray, of Liverpool .............. 184 
on a novel Arrangement of Direct-acting Steam-Engines .. 186 
——_—__——— on a novel Method of covering Boilers, Pipes, and Cylinders of 
Steam-Engines for preventing the Radiation of Heat, the invention of Mr. 
James Spence, of H.M. Dockyard, Portsmouth ..............eeeee eens 187 
on an improved Valve and A pparatus for Atmospheric Railways 188 
Mr. Joun SturGEoN on Self-acting Valve Motion for Steam Hammers .... 189 
Mr. R. Taytorson on the Diagonal Principle of Iron Shipbuilding ........ 189 
Dr. WuITE on the Prevention of Fouling of Ships’ Bottoms .............. 189 
List of Papers of which the Abstracts were not received ...............055 191 
