642 SUMMARY OF CURRENT RESEARCHES RELATING TO 



chloride solution, dilute nitric acid, and the vapour of concentrated 

 nitric acid, were the etching rea2;ents. The compounds are SboMuo, 

 SbMn,, Sb,Cr, SbCr, SbSn (?), SnMn,, SnMn^, SuMn (?). The magnetic 

 properties of some of the alloys were studied. 



Behaviour of Iron with Lead, Bismuth, Thallium, and Cadmium.* 

 E. Isaac and Gr. Tammann show that solid iron is completely insoluble 

 in these molten metals, and nou-miscible in the liquid state with lead 

 and bismuth, while the boiling points of cadmium and tliallium are 

 below the melting point of iron, Xo alloys could therefore be obtained. 



Alloys of Iron with Platinum.f — E. Isaac and G-. Tammann give 

 the equihbrium diagram. At high temperatures the two metals form a 

 continuous series of mixed crystals. At lower temperatures, this is 

 transformed into two other series of mixed crystals containing respectively 

 0-50 p.c. and 60-100 p.c. platinum. The transformation temperature 

 of iron (Ar 8) is lowered by addition of platinum. The analogy between 

 these alloys and the nickel-iron alloys is indicated. Dilute nitric acid and 

 hot aqua-regia were the etching reagents, one or the other being used 

 according to platinum content. 



Potential and Nature of Metallic Alloys.^— N. Puschin has 

 determined the potential curves of some binary alloys. The E.M.F. is 

 that given by a cell made up of one pure metal, the alloy, and the aqueous 

 solution of a salt of the metal. The typical curves proper to different 

 types of binary series of alloys are described. The application of the 

 method to the study of alloys is indicated. 



Bell, J. M. — The Composition of Solid Phases in Four-component Systems. 



Journ. Phys. Chem., xi. (1907) pp. 394-5. 

 Beaumont, W. W.— Corrugation of Tramway Rails. 



Engineering, Ixxxiv. (1907) p. 256. 

 GuiLLET, L. — Constitution of Copper Alloys. 



[The author's conclusions regarding the existence of a brittle zone in each 

 series of binary alloys of copper are illustrated by photomicrographs.] 



Bcv. MMallurgie, iv. (1907) pp. 622-7 (5 figs.). 

 See also this Journal, 1907, p. 508. 

 GuERTLEE, W. — Modem Metallography. 



Zentralbl. f. Eisen., ii. (1907) pp. 478-9. 

 Heathcote, H. L. — Passive Iron. 



Journ. Soc. Chem. Ind., xxvi. (1907) pp. 899-917 (28 figs.). 

 Obholzer, a. — Avoidance of Pipe Formation. 



Stahl unci Eisen, xxvii. (1907) pp. 1117-21, 1155-60 (17 figs.). 

 ViGOUROUX, E.— Nickel-tin Alloys. Comptes Bendus, cxlv. (1907) pp. 246-8. 



* Zeitschr. Anorg. Chem., Iv. (1907) pp. 58-62 (2 figs.), 

 t Tom. cit., pp. 63-71 (7 figs.). 



X Journ. Soc. Chem. Ind., xxvi. (1907) p. 826. See also J. Russ. Phys. -Chem. 

 Ges., xxxix. (1907) pp. 13-54. 



