672 SUMMARY OF CURRENT RESEARCHES. 



thermo-electric couple was used for measuring low temperatures. 

 Numerous results are given by the author ; those given by the experi- 

 ments on the irreversible alloys of iron and nickel are of especial 



interest. 



Carpenter, H. 0. H., & Keeling, B. F. E. — The Range of Solidification and the 

 Critical Ranges of Iron-carbon Alloys. 



[A reprint of the well-known paper read before the Iron and Steel Institute 

 in May 1904. A number of cooling curves necessarily omitted from the 

 paper as originally published are included. A very complete investigation 

 of the critical temperatures of iron-carbon alloys.] 



Collected Researches of the National Physical Laboratory, 



i. pp. 229-44 (5 pis. 4 figs.). 



Charpy. — Modification de la qualite du metal des rivets par l'operation du rivetage. 



Comptes Rendus, cxli. (1905) pp. 327-8. 



'Fremont, C. — Influence de la fragilite de l'acier sur les effets du cisaillement, du 

 poinconnage, et du brochage dans la chaudronnerie. Tom. cit., pp. 325-7. 



Guillet, L. — Constitution des alliages cuivre-aluminium. 



[Included in the article on the same subject published in Rev. Metallurgie 

 and abstracted above. See also J.R.M.S., 1905, p. 536.] 



Tom. cit, pp. 464-7. 

 Job, R. — Some Causes of Failure of Rails in Service. 



Iron and Steel Mag., x. (1905) pp. 97-106 (8 figs.). 



Osmond, F. — Contribution a la discussion du memoire de M. Hadfield " Experiments 

 relating to the effect on Mechanical and other Properties of Iron and its Alloys 

 produced by Liquid Air Temperatures." 



[Hadfield's conclusions regarding the allotropic theory of iron, based on the 

 behaviour of alloys at low temperatures, are disputed. The difference in 

 the influence of liquid air temperatures on nickel steel and on manganese 

 steel is shown to be quite consistent with the allotropic theory.] 



Rev. Metallurgie, ii. (1905) pp. 595-600 (2 figs.). 



Saniter, E. H. — Etching of High Carbon Steel. 



[The specimen is dipped in absolute alcohol, then strong nitric acid, and 

 washed at the tap.] Iron and Steel Mag., x. (1905) p. 156. 



Vanadium and Vanadium Steel. Tom. cit, pp. 134-40. 



