6. ' Education in London in 1 93 1 .' A complete summary review 

 of Educational Institutions, &c., prepared under the Editorship of 

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7. ' Mathematical Tables,' Vol. I. Circular and Hyperbolic 

 Functions, Exponential Sine and Cosine Integrals, Factorial 

 (Gamma) and Derived Functions, Integrals of Probability Integrals. 

 Demy 4to, stiff cloth, xxxv+72 pp. 10s. (postage, 3d.) 



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8. ' Stresses in Overstrained Materials.' The Report of a Com- 

 mittee, containing papers on An Investigation of the Hardness of a 

 Steel Tube along certain Luders or Probert Lines, by Sir Henry 

 Fowler ; Changes in Indentation Hardness of Test-pieces resulting 

 from varying amounts of Deformation or Plastic Flow during the 

 application of Tensile Stress, by Sir Henry Fowler ; The Phe- 

 nomenon of Tensile Yield in Mild Steel and Iron, by J. G. Docherty 

 and F. W. Thome ; The Upper and Lower Yield Points in Steel 

 exposed to non-uniform Distribution of Stress, by Prof. G. Cook ; 

 Plastic Strain in relation to Fatigue in Mild Steel, by Prof. B. P. 

 Haigh and T. S. Robertson B.A. Reprints, No. 29. 

 Demy 8vo, paper. Is- W. 



9. ' Educational Training of Boys and Girls in Secondary Schools 

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Note.— Items Nos. 4, 5. and 9 above are included in the Annual Report, 1931, 

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