vi 



PAGE 



The Intrinsic Factors in the Act of Progression in the Mammal. By T. Graham 



Brown. Communicated by Prof. C. S. Sherrington, F.B.S 308 



An Inquiry into the Influence of the Constituents of a Bacterial Emulsion on the 



Opsonic Index. By A. F. Hayden, M.B., B.S., F.R.C.S., I.M.S., and W. Parry 



Morgan, M.A., B.Sc, M.B. Communicated by Sir A. E. Wright, F.R.S 320 



The Morphology of Trypanosoma gamlriense (Dutton). By Colonel Sir David Bruce, 



C.B., F.B.S., A.M.S. (Plate 13) 327 



The Behaviour of the Infusorian Micronucleus in Regeneration. By Kenneth 



R Lewin, B.A., Senior Scholar and Coutts Trotter Student of Trinity College, 



Cambridge. Communicated by Prof. J. S. Gardiner, F.R.S 332 



The Refractive Indices of the Eye Media of some Australian Animals. By Judah 



Leon Jona, D.Sc, M.B., B.S. Communicated by Prof. J. N. Langley, F.R.S.... 345 



No. B 573.— December 28, 1911. 



Ventilation of the Lung during Chloroform Nai-cosis. By G. A. Buckmaster and 



J. A. Gardner. Communicated by Dr. A. D. Waller, F.R.S 347 



Factors in the Interpretation of the Inhibitive and Fixation Serum Reactions in 

 Pulmonary Tuberculosis. By Alfred H. Caulfeild, M.B. Communicated by 

 Prof. T. G. Brodie, F.R.S 373 



Preliminary Report upon the Injection of Rabbits with Protein-free (Tuberculo-) 

 Antigen and Antigen-Serum Mixtures. By Alfred H. Caulfeild, M.B. Com- 

 municated by Professor T. G. Brodie, F.R.S 390 



Studies in Heredity. I. — The Effects of Crossing the Sea-urchins Echinus eseulentus 

 and Echinocardium cordatum. By Prof. E. W. MacBride, F.R.S., Imperial 

 College of Science and Technology, South Kensington 394 



The Physiological Influence of Ozone. By Leonard Hill, F.R.S., and Martin Flack 404 



On the Factors Concerned in Agglutination. By H. R. Dean, M.A., M.B., Ch.B., 

 M.R.C.P., Assistant Bacteriologist, Lister Institute, London. Communicated 

 by Dr. C. J. Martin, F.R.S 416 



No. B 574.— February 14, 1912. 



Address of the President, Sir Archibald Geikie, K.C.B., at the Anniversary Meeting 



on November 30, 1911 435 



Action of Dissolved Substances upon the Autofermentation of Yeast. By Arthur 



Harden, F.R.S., and Sydney G. Paine 44S 



Further Experiments upon the Blood Volume of Mammals and its Relation to the 

 Surface Area of the Body. By Georges Dreyer, MA., M.D., Professor of 

 Pathology in the University of Oxford, and William Ray, M.B., B.Sc, Philip 

 Walker Student in the University of Oxford. Communicated by Prof. Francis 

 Gotch, F.R.S. (Abstract) 460 



The Origin and Destiny of Cholesterol in the Animal Organism. Part VIII. — On 

 the Cholesterol Content of the Liver of Rabbits under Various Diets and 

 during Inanition. By G. W. Ellis and J. A. Gardner. Communicated by 

 Dr. A. D. Waller, F.R.S 461 



