IV 



VAOE 



On the Determination of a Coefficient by which the Rate of Diffusion of Stain and 

 other Substances into Living Cells can be Measured, and by which Bacteria and 

 other Cells may be Differentiated. By Hugh C. Ross, late Surgeon R.N., 

 Pathologist to the Royal Southern Hospital, Liverpool. Communicated by 

 Major Ronald Ross, C.B., F.R.S. (Plate 3) .*. 97 



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

 Absorption of Cholesterol from the Food and its Appearance in the Blood. By 

 Charles Doree, Lindley Student of the University of London, and J. A. 

 Gardner, Lecturer in Physiological Chemistry, University of London. Com- 

 municated by Dr. A. D. Waller, F.R.S 109 



The Origin and Desthr^ of Cholesterol in the Animal Organism. Part IV. — The 

 Cholesterol Contents of Eggs and Chicks. By G. W. Ellis and J. A. Gardner, 

 Lecturer on Physiological Chemistry, University of London. Communicated 

 by Dr. A. D. Waller, F.R.S , 129 



On the Cross-breeding of Two Races of the Moth Acidalia virgularia. By Louis B. 



Prout, F.E.S., and A. Bacot, F.E.S. Communicated by Leonard Hill, F.R.S. ... 133 



The Nerves of the Atrio-ventricular Bundle. By J. Gordon Wilson, M.A., 

 M.B. (Edin.), Hull Laboratory of Anatomy, University of Chicago. Communi- 

 cated by Dr. F. W. Mott, F.R.S. (Plates 4—6) 151 



No. B 547.— June 5, 1909. 



The British Freshwater Phytoplankton, with Special Reference to the Desmid- 

 plankton and the Distribution of British Desmids. By W. West, F.L.S., and 

 G. S. West, M.A., D.Sc, FL.S. Communicated by D. H. Scott, F.R.S 1G5 



On the Presence of Htem-agglutinins, Hsem-opsonins, and Hiemolysins in the Blood 

 obtained from Infectious and Non-Infectious Diseases in Man. (Second 

 Report.) By Leonard S. Dudgeon, F.R.O.P. Lond. Communicated by Dr. 

 F. W. Mott, F.R.S 207 



The Theory of Ancestral Contributions in Heredity. By Karl Pearson, F.R.S 219 



On the Ancestral Gametic Correlations of a Mendelian Population mating at 



Random. By Karl Pearson, F.R.S 225 



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

 Inhibitory Action of the Sera of Rabbits fed on Diets containing Varying 

 Amounts of Cholesterol on the Haemolysis of Blood by Saponin. By Mary T. 

 Eraser and J. A. Gardner. Communicated by Dr. A. D. Waller, F.R.S 230 



The Iniiuence of Glucosides on the Growth of Acid-fast Bacilli, with a New Method 

 of Isolating Human Tubercle Bacilli directly from Tuberculous Material 

 contaminated with other Micro-organisms. (Preliminary Note.) By F. W. 

 Twort. (Jommunicated by Leonard Hill, F.R.S 248 



No. B 548.— July 8, 1909. 



Reciprocal Innervation of Antagonistic Muscles. Fourteenth Note. — On Double 



Reciprocal Innervation. By O. S. Sherrington, D.Sc, F.R.S 249 



