XVI CONTENTS. 



Page 

 Mr. J. J. OoLUMAN on a Machine for the Liquefaction of Gases by combined 



Cold and Pressure 220 



Mr. A. Crum-Ewing on Drainage Outlets through Slob Lands 220 



Mr. St. J. Vincent Day on recent Attempts at Patent Legislation 220 



Mr. G. F. Deacon on the Form of Blocks for Testing Cement 220 



on the Strength of Concrete as affected by delay between 



mixing and placing in situ 220 



Mr. J. Deas on Stobcross Docks 220 



Mr. Thomas Dobson on Improved Safety-Apparatus for Mine-Hoists and 



Warehouse-Lifts 222 



Mr. Mortimer Evans on the Application of Spring Fenders to Pier-heads . . 223 



on a Safety-Lock for Facing-points 223 



Mr. J. B. Fell on the Experiments made at the Camp at Aldershot with a 



new form of Military Field-Railway, for rapid construction in war time . . 223 

 Captain Douglas Galton on Railways on Three-foot Gauge in the United 



States 224 



Mr. J. H. Greenhill on an Improved Grain-sieve 225 



Mr. R. R. Harper on Improvements in Railway Appliances 225 



Mr. T. S. Hunter on Dock- and Quay-Walls, Foundations, &c 225 



Professor A. B. W. Kennedy on Reuleaux's Treatment of Mechanisms .... 226 



Mr. Baldwin Latham on the Importance of Hydro-Geological Surveys from 

 a Sanitary point of view 226 



Mr, R. Mansel on the Direct Motion of Steam -Vessels 227 



Mr. W. J. Millar on the Strength and Fracture of Cast Iron 227 



Mr. James Nasmyth on a Spherical Pendulous Safety- Valve 229 



Professor Osborne Reynolds on the Steering Qualities of Ships 229 



Mr. R. Lavender on a New Form of Lamp 229 



Mr. F. J. Rowan on Boiler Incrustation and Corrosion 229 



Mr. John Lang on an Apparatus for Cleaning Filtering-Sand 232 



Mr. W. D. Scott-Moncreiff on a Pneumatic Tramway Car 233 



Mr. Wm. Simons on an Elevating Steam Ferry 233 



Mr. James Steel on the Brake Problem 233 



Mr. W. Stroudley on Communications between Passengers and Guards in 



Railway Trains 233 



Sir W. Thomson on Naval Signalling 233 



Mr. J. Evelyn Williams on Steam-Ship Resistance 233 



EEEATUM IN EEPORT FOR 1876. 



In the Reports. 



In the Table, p. 174, eighth line from bottom, for 14 read 41. 



Note.— The figures in the third and fourth columns in the Table represent 



feet and inches. 



