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THE ELASTIC PROPERTIES OF STEEL AT HIGH TEMPERATURES. 



By Bertram Hopkinson, M.A., M.I.C.E., Professor of Mechanism and Applied Mechanics in the 

 University of Cambridge, and F. Rogers, B.A. (Cantab.), M. Sc., M.Eng 



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Cuthbertson and E. B. R. Prideaux, M.A., B.Sc. (Abstract) 426 



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VAPOUR. By W. N. Hartley, D.Sc, F.R.S 428 



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AN EXPERIMENT WITH THE BALANCE TO FIND IF CHANGE OF 



TEMPERATURE HAS ANY EFFECT UPON 'WEIGHT. By J. H. Poynting, Sc.D., F.R.S., and 



Percy Phillips, M.Sc ■■ " "" 



A NEW FORMATION OF DIAMOND. By Sir William Crookes, Hon. D.Sc. 



(Oxford and Dubl.), F.R.S 



THE INFLUENCE OF PHASE CHANGES ON THE TENACITY OF 



DUCTILE METALS AT THE ORDINARY TEMPERATURE AND AT THE BOILING POINT 



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OF RADIUM. PART III.— RADIATION IN HYDROGEN. By Sir William Huggins, K.C.B., 

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