PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



vol. lxxi. No. 473. 



CONTENTS. 



PAGE 



The Differential Invariants of a Surface, and their Geometric Significance. 



By Professor A. E. Forsyth, F.E.S. (Abstract) 331 



The Electrical Conductivity of Solutions at the Freezing-point of Water. 



By W. C. D. Whetham, F.E.S., Fellow of Trinity College, Cambridge 332 

 The Resistance of the Ions and the Mechanical Friction of the Solvent. By 



Friedr. Kohlrausch, Foreign Member E.S 338 



Upon the Immunising Effects of the Intracellular Contents of the Typhoid 

 Bacillus as obtained by the Disintegration of the Organism at the Tem- 

 perature of Liquid Air. By Allan Maceadyen, M.D. Communicated 



by Lord Lister, O.M., F.E.S 351 



On the Histology of Uredo dispersa, Erikss., and the " Mycoplasm " Hypo- 

 thesis. By H. Marshall Ward, Sc.D., F.E.S. , Professor of Botany in 

 the University of Cambridge. (Abstract) . . . . . .353 



The GSstrous Cycle and the Formation of the Corpus Luteum in the Sheep. 

 By Francis H. A. Marshall, B.A. Communicated by Professor J. C. 



Ewart, F.E.S. (Abstract) . . .354 



On the Culture of the Nitroso-bacterium. By H. S. Fremlin, Lymph 

 Laboratories, Chelsea Bridge. Communicated by Sir Michael Foster, 



K.C.B., Sec. E.S . . . . .356 



The Statolith -theory of Geotropism. By Francis Darwin, M.A., M.B., 



F.E.S. . . .... .362 



On the Laws governing Electric Discharges in Gases at Low Pressures. By 

 W. E. Carr, B.A., University of Toronto. Communicated by Professor 



J. J. Thomson, F.E.S. (Abstract) 374 



On the Optical Activity of Haemoglobin and Globin. By Arthur Gamgee, 

 M.D., F.E.S., Emeritus Professor of Physiology in the Owens College, 

 Victoria University, and A. Croet Hill, M. A., M.B., late George Henry 

 Lewes Student in Physiology . . . . . . . 376 



On the Nucleoproteids of the Pancreas, Thymus, and Suprarenal Gland, 

 with especial Eef Q rence to their Optical Activity. By Arthur Gamgee, 

 M.D., F.E.S., Emeritus Professor of Physiology in the Owens College, 

 Victoria University, and Walter Jones, Ph.D., Associate Professor 

 of Physiological Chemistry in the Johns Hopkins University . . . 385 



Minutes o&Meetings of February 26 and March 5, 12, 19, and 26, 1903 



Price Two ShiUw^ ^ m 

 April 7, 1903. {. '*■ 



^ 20 ?! 

 'ce librarfe 



