PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 



Series B. Vol. 84. No. B 571. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



Page 



The Structure and Physiological Significance of the Root-nodules of Myrica 

 gale. By W. B. BOTTOM LEY, M.A.. Professor of Botany in King's 

 College, London . . . . . . . . . .215 



Note on the Surface Electric Charges of Living Cells. By W. B. HARDY, 



F.R.S., and H. W. HARVEY 217 



The Origin of Osmotic Effects. IV. — Note on the Differential Septa in 

 Plants with reference to the Translocation of Nutritive Materials. By 

 HENRY E. ARMSTRONG, F.R.S., and E. FRANKLAND ARMSTRONG . 226 



The Properties of Colloidal Systems. III. — The Osmotic Pressure of 

 Electrolytically Dissociated Colloids. By W. M. BAYLISS, F.R.S., Institute 

 of Physiology, University College, London ...... 229 



On the Fate of Red Blood Corpuscles when Injected into the Circulation of 

 an Animal of the same Species ; with a New Method for the 

 Determination of the Total Volume of the Blood. By CHARLES TODD, 

 M.D., Bacteriologist, Egyptian Government ; and R. G. WHITE, M.B., 

 Director, Serum Institute, Cairo ........ 255 



Electrical Effects accompanying the Decomposition of Organic Compounds. 

 By M. C. POTTER, Sc.D., M.A., Professor of Botany in the University of 

 Durham 260 



Fractional Withdrawal of Complement and Amboceptor by Means of 

 Antigen. (Preliminary Note.) By J. O. WAKELIN BARRATT, M.D.. 

 D.Sc. Lond., Director of Cancer Research Laboratory, University of 

 Liverpool (Mrs. Sutton Timmis Memorial) ...... 277 



r si 



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Price Two Shillings. 



September 14, 1911. 



No. B 571. 



