XXII CONTENTS. 



Page 



2. The Teaching of Economics in University Tutorial Classes. By A. 



Mansbridge and R. H. Tawney 691 



3. Statistics of Cotton Mill Accidents. By H. Verney 692 



Joint Discussion with Sub-section B (Agriculture) on the Magnitude of 



Error in Agricultural Experiments (p. 587) 692 



Section G.— ENGINEERING. 



THURSDAY, SEPTEMBER 1. 



Address by Professor W. E. Dalby, M.A., M.Inst.C.E., President of 



the Section 693 



The Testing of Lathe Tool Steels. By Professor W. Ripper, D.Eng., 



M.Inst.C.E 708 



FRIDAY, SEPTEMBER 2. 



1. Third Report on Caseous ExploMons (p. 199) 708 



2. The Testing of Files. By Professor W. Ripper, D.Eng., M.Inst. C.E. 708 



MONDAY, SEPTEMBER 5. 



1. *The Electrification of the London, Brighton, and South Coast 



Railway between Victoria and London Bridge. By Philip 

 Dawson 709 



2. On the Use of an Accelerometer in the Measurement of Road 



Resistance and Horse Power. By H. E. Wimperis, M.A., 

 Assoc. M.J list. C.E 709 



3. The Cyclical Changes of Temperature in a Gas-engine Cylinder near 



the Walls. By Professor E. G. Coker, M.A., D.Sc 710 



4. tThe Value of Anchored Tests of Aerial Propellers. By W. A. 



Scoble : 710 



*Joint Discussion witli Section A on the Principles of Mechanical 



Flight. Opened by Professor C. H. Bryan, F.R.S 710 



TUESDAY, SEPTEMBER 6. 



1. The Optical Determination of Stress. By Professor E. 0. <<>kek, 



M.A., D.Sc 711 



2. On the Direct Measurement of the Rate of Air or Gas S u j • | > 1 \ 



to a Gas Engine by means of an Orifice and U-Tube. Bv Pro- 

 fessor W. E. Dalby, M.A., M.Inst.C.E '. 711 



3. tThe Laws of Electro-Mechanics. By Professor S. P. Thompson, 



F.R.S 712 



