V 



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Contributions to the Biochemistry of Growth. — On the Lipoids of Transplantable 

 Tumours of the Mouse and the Rat. By W. E. Bullock and W. Cramer. 

 Communicated by Sir John Bradford, Sec. R.S 236 



Studies in Heredity. II. — Further Experiments in Crossing British Species of 



Sea-urchins. By E. W. MacBride, F.B.S 240 



The Optimum Temperature of Salicin Hydrolysis by Enzyme Action is Independent 

 of the Concentrations of Substrate and Enzyme. By Arthur Compton, B.A., 

 M.B., R.U.I., Imperial Cancer Research Fund. Communicated by Sir J. R. 

 Bradford, K.C.M.G., Sec. R.S 245 



No. B 595.— February 2, 1914. 



The Resonance of the Tissues as a Factor in the Transmission of the Pulse and in 

 Blood Pressure. By Leonard Hill, M.B., F.R.S., James M. McQueen, M.A., 



B. Sc, M.B., and William W. Ingram, M.B., Ch.B 255 



On a Method of Studying Transpiration. By Sir Francis Darwin, F.R.S 269 



The Effect of Light on the Transpiration of Leaves. By Sir Francis Darwin, F.R.S. 281 



The Chemical Interpretation of some Mendelian Factors for Flower-Colour. By 

 M. Wheldale, Fellow of Newnham College, Cambridge, and H. LI. Bassett, 

 Trinity Hall, Cambridge. Communicated by W. Bateson, F.R.S 300 



On the Heat Production Associated with Muscular Work. By R. T. Glazebrook, 



M.A., F.R.S., and D. W. Dye, B.Sc 311 



On the Fossil Floras of the Wyre Forest, with Special Reference to the Geology of 

 the Coalfield and its Relationships to the Neighbouring Coal Measure Areas. 

 By E. A. Newell Arber, M.A., Sc.D., F.G.S., F.L.S., Trinity College, 

 Cambridge. Communicated by Prof. T. McKenny Hughes, F.R.S. (Abstract) 317 



The Determination of the Minimal Lethal Dose of various Toxic Substances and its 

 Relationship to the Body Weight in Warm-Blooded Animals, together with 

 Considerations bearing on the Dosage of Drugs. By Georges Dreyer, M.D., 

 Fellow of Lincoln College, Professor of Pathology in the University of Oxford ; 

 and E. W. Ainley Walker, D.M., Fellow and Tutor of University College, 

 Lecturer in Pathology in the University of Oxford. Communicated by Prof. 



C. S. Sherrington, F.R.S 319 



No. B 596.— April 8, 1914. 



Experiments on the Restoration of Paralysed Muscles by Means of Nerve 

 Anastomosis. Part II. — Anastomosis of the Nerves supplying Limb Muscles. 

 By Robert Kennedy, M.A., D.Sc, M.D., St. Mungo Professor of Surgery in 

 the University of Glasgow. Communicated by Prof. J. G. McKendrick, F.R.S. 

 (Abstract) 331 



Variations in the Sex Ratio of Mvs rattus Associated with an Unusual Mortality of 

 Adult Females. By F. Norman White, M.D. (Lond.), Capt. I.M.S. Com- 

 municated by Prof. C. J. Martin, F.R.S 335 



