XVI CONTENTS. 



Page 

 Mr. J. Hitchman on Sanitary Drainage of Towns 191 



Mr. E. Jarvis on the System of Taxation prevailing in the United States 191 



Dr. Michelsen on Serfdom in Russia = 191 



Mr. J. M. Mitchell on the Economical History and Statistics of the Her- 

 ring 191 



Mr. W. Newmarch on some suggested Schemes of Taxation, and the Difficul- 

 ties of them 194 



Mr. Henry John Ker Porter's Hints on the best Plan of Cottage for Agri- 

 cultural Labourers 194 



Mr. F. Purdy on the Systems of Poor Law Medical Relief 195 



Mr. Henry Roberts's Notes on various efforts to Improve the Domiciliary 

 Condition of the Labouring Classes 196 



MECHANICAL SCIENCE. 



Mr. P. W. Barlow on the Mechanical Effects of combining Suspension Chains 

 and Girders, and the value of the Practical Application of this System (illus- 

 trated by a Model) 201 



Captain Blakeley on Rifled Cannon 201 



Rev. Dr. Booth on a deep Sea Pressure Gauge, invented by Henry Johnson, Esq. 202 



Earl of Caithness on Road Locomotives 204 



Mr. E. Cowper's New Mode of obtaining a Blast of very High Temperature 

 in the Manufacture of Iron 204 



Mr. John Elder on the Cylindrical Spiral Boiler 204 



Mr. William Fairbairn on the Density of Saturated Steam, and on the Law 

 of Expansion of Superheated Steam 210 



Mr. John Fisher on any Atmospheric Washing Machine 210 



Mr. William Froude on Giffard's Injector for Feeding Boilers 211 



Mr. Walter Hall on a Process for Covering Submarine Wires with India- 

 rubber for Telegraphic purposes 211 



Professor Hennessy's Suggestions relative to Inland Navigation 211 



Mr. Calcott Reilly on the Longitudinal Stress of the Plate Girder 212 



Dr. B. W. Richardson on Suggestions for an Electro-Magnetic Railway 

 Break .'. 212 



Mr. S. W. Silver on the Character and Comparative Value of Gutta Percha 

 and India-rubber employed as Insulators for Subaqueous Telegraphic Wires. 212 



Mr. W. Simons on Improvements in Iron Shipbuilding 212 



Admiral Taylor's Novel Means to lessen the frightful Loss of Life round 

 our exposed Coasts by rendering the Element itself an Inert Barrier against 

 the Power of the Sea ; also a Permanent Deep-water Harbour of Refuge by 

 Artificial Bars 215 



Mr. G. F. Train on Street Railways as used in the United States, illustrated 

 by a Model of a Tramway and Car, or Omnibus capable of conveying sixty 

 persons 215 



Messrs. Werner and C. W. Siemens on a Mode of covering Wires with 

 India-rubber 215 



APPENDIX. 



Physiology. 

 Professor J. H. Corbett on the Deglutition of Alimentary Fluids 2lf 



