ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 829 



Berg, C. P. — Heat-treatment of High-speed Tools. 



Journ. West. Soc. Eng., xv. (1910) pp. 738-54. 



Bernoulli, A. L. — The Law of Babo and the Electron Theory of Metallic 

 Mixed Crystals. Ber. Deutsch. Phys. Ges., xiii. (1911) pp. 213-18. 



Borne mann, K.— Binary Metallic AlloyB. 



[Further instalments of this summary of published researches.] 



Metallurgie, viii. (1911) pp. 270-80, 289-95, 358-65 (47 figs.). 



Boudouard, 0. — Testing of Metals by Observation of the Damping of Vibra- 

 tions. ' Comptes Rendus, clii. (1911) pp. 45-7. 



Brooks, K. P. — Besistance of Metallic Mixtures and Alloys. 



[It is shown that the high resistance of alloys cannot be explained by the 

 presence of opposing E.M.F.'s at the junctions of neighbouring particles 

 of the two components.] Phys.Zeitschr., xi. (1910) pp. 471-3. 



Campion, A. — Notes on the Treatment of Steel Castings. 



Foundry Trade Journal, xiii. (1911) pp. 531-2. 



Calvo, A. R. — Electrical Conductivity of Silver Amalgams and of Cadmium 

 Amalgams. Ion, ii. (1910) pp. 408-10. 



Charpy, G., & S. Bonnerot— Gases contained in Steel. 



[The gases were extracted by heating the steel at 950° C. in a vacuum ; they 

 were measured and analysed. The removal of the gases had no effect 

 upon the thermal critical points.] 



Comptes Rendus, clii. (1911) pp. 1247-50. 



Desch, C. H. — Composition of Eutectic Mixtures. 



Trans. Faraday Soc, vi. (1911) pp. 160-6. 



Pay, IT. — Some Causes of Failure in Metals. 



[Metallographical investigations of some defects in steel are described.] 



Mech. Eng., xxvii. (1911) pp. 690-1. 



Greenwood, H. C. — Vapour-pressure Curves and Heat of Evaporation of Metals 

 of High Boiling-point. Zeitschr. Phys. Chem., lxxvi. (1911) pp. 484-90. 



Guertler, W. — Electric Conductivity and Temperature Coefficients of Alloys. 



Phys. Zeitschr., xi. (1910) pp. 476-9. 



Guillaume, C.E. — Anomalous Dilatation of Nickel Steels. 



Comptes Rendus, clii. (1911) pp. 189-91 (2 figs.). 



Hart mann, L. — Meohanism of Permanent Deformation in Metals Strained in 

 Tension. 



[A study of the surface-changes observed during the loading of tensile test- 

 piecea, and of the effect of previous cold- working, annealing, etc., upon 

 these changes.] 



Comptes Rendus, clii. (1911) pp. 1005-7, 1034-6, 1233-7. 



Heyn, E. — Formation of Graphite in Iron Alloys. 



Zeitschr. Elektrochem., xvii. (1911) p. 182. 



Is hew sky, W. — Production of Granular Pearlite by Annealing Steel in an 

 Electrically-heated Vacuum Furnace. 



Journ. Russ. Met. Ges., 1910, pp. 196-202. 



Jeriomin, K. A. — Formation of Graphite in Iron Alloys. 



[The view that graphite results from the decomposition of cementite is dis- 

 cussed and supported.] Zeitschr. Elektrocliem., xvii. (1911) pp. 93-8. 



Johnson, F. — Annealing of Copper and Diseases of Copper. 



Met. and Chem. Eng., ix. (1911) pp. 87-90 (4 figs.). 



,, ,, Notes on the Metallurgy of Wrought Copper. 



Met. and Chem. Eng., ix. (1911) pp. 396-401 (9 figs.). 



Jolibois, P. — Allotropic Varieties aud Melting-point of Arsenic. 



Comptes Rendus, clii. (1911) pp. 1767-9, 



Dec. 20th, mil 3 H 



