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Page 
THE ELASTIC PROPERTIES OF STEEL AT HIGH TEMPERATURES. 
By Bertram Hopxinson, M.A., M.I.C.E., Professor of Mechanism and Appel Mecharies a in the : 
Tinivceies of Cambridge, and F, RocErs, B.A. (Cantab.), M.Sc., M.Eng. .. 419 
ON THE REFRACTIVE INDEX OF ade mtu cosa By me t 
CUTHBERTSON and E. B. R. PripEaux, M.A., B.Sc. (Abstract) ee 426 
THE ABSORPTION SPECTRUM BND BLU OR St eee ee MERCURY 
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THE FORMATION OF ICE AND THE GRAINED STRUCTURE OF — 
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ON THE INFLUENCE OF COLLISIONS AND OF THE MOTION OF 
MOLECULES IN THE LINE OF SIGHT, ate THE Pete bie ee ae OF A SPECTR 
LINE. By Lorp RAYLEIGH, ©.M.; ELR.S.. 440 
AN EXPERIMENT WITH THE BALANCE TO FIND IF CHANGE OF 
TEMPERATURE HAS ANY ee pee WEIGHT. we a LAS Bae) Sc.D, ER and 
Percy Puitiirs, M.Sc. zt yes 445 i 
A NEW FORMATION OF DIAMOND. By Sir Wrintam CrooxEs, Hon, D.Sc. | 
(Oxford and Dubl.), F.R.S.. 5 458 
THE INFLUENCE OF PHASE CHANGES ON THE TENACITY OF 
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