XXVI CONTENTS. 



Page 



1. The World's Columbian ]''xposition for 1893. By Jajuos Dkkdge, and 

 ROBEET S. McCORJIlCK 858 



2. The Application of Destructors, especially to the I'^leetric Lig'hting of 

 Edinburgh. By Professor G. Foebes, F.R.S., F.R.S.E \ 860 



3. The Disposal of Refuse. By G. Watsox 860 



4. The Absorption and Filtration of Sewage on Sandy and other Soils. By 

 RiCHAED F. Geaxtham, M.Inst.C.E., F.G.S 863 



5. Shield Tunnelling in Loose Ground under Water Pressure. ]Sv G. F. 

 Deacon ." 863 



6. Proposed Forth and Clyde Ship Canal. By David A. Stevexson, B.Sc, 

 F.R.S.E., M.Inst.C.E 863 



FRIDAY, AUGUST 5. 



1. An Automatic Railway for the Carriage of Packages. By David Cun- 

 ningham, M.Inst.C.E., F.R.S.E " 864 



2. On Electric Locomotives. By Alexander Siemens 865 



3. The Utilisation of the Energy of Flowing Water. Description of the 

 Purdon- Walters Motor. By 5lessrs. PrKDOX' and Walters 866 



4. On the Extended Use of the Principle of the Hydraulic Ram. By H. D. 



Pearsall, Assoc.MJnst.C.E ' 867 



5. On a new Form of Windmill. By Professor James Bltth, M.A 869 



6. Flexible Metallic Tubing. By Gilbert R. Redgrave, Assoc.lnst.C.E.... 870 



JVO^^I>Ar, AUGUST s. 



1. Report on Graphic Methods. By Professor H. S.Helk-Shaw, M.Inst.C.E. 871 



2. The Destruction of Lightning Protectors by recent Municipal Legislation. 



By W. H. Peeece, F.R.S 871 



3. Secondary Batteries in use at the Central Telegi-aph Office, London, for 

 Telegraphic Purposes. By W. H. Peeece, F.R.S 872 



4. Power Transmission by Alternating Current. By Gisbeet Kapp 873 



6. A new Electric Locomotive. By E. H. Woods 874 



6. Coin-counting Machine at the Royal Mint. By Lieut. W. B. Basset, R.N. 876 



7. Antifriction Materials for Bearings used without Lubricants. By Killing- 

 worth Hedges, M.Inst.C.E 876 



8. Notes on the Design of Steam Generators especially adapted for High 

 Pressures. By H. B. Thwaite, C.E., F.C.S 877 



9. The Strength of Small Chains. By Professor H. S. Hele-Shaw, 

 M.Inst.C.E .' 878 



TU-ESBA r, A UG VST Vi. 



1. Dredgers. By A. Brown 879 



2. Note on Motors used for Fog Signals in the Northern Lighthouse Service. 



By David A. Stevenson, B.Sc, F.R.S.E., M.Inst.C.E 879 



3. On the Progress of the Dioptric Lens as used in Lighthouse Illumination. 



By Charles A. Stevenson, B.Sc, F.R.S.E., M.Inst.C.E 879 



4. Smoke-consuming Apparatus. By A. R. Sennett 880 



