354 Index 



Ramanujan, S., On some definite integrals, 188. 



Some properties of ^ (n), the number of partitions of n, 207. 



8ee Rogers, L. J. 



Reciprocal Relations in the Theory of Integral Equations (MacMahon and 



Daeling), 178. 

 Relativity, Hydrodynamics of (Weatherburn), 72. 

 Rodrigues, Natural History of (Snell and Tams), 283. 

 Rogers, L. J., and Ramanujan, S., Proof of certain identities in combinatory 



analysis, 211. 

 RuDGE, W. A. D., A seK-recording electrometer for Atmospheric Electricity, 1. 



the I 



Sahni, B., On an Australian specimen of Clepsy drop sis, 128. 



Observations on the Evolution of Branching in the Ferns, 128. 



■ ■ On the branching of the Zygopteridean Leaf, and its relation to 



probable Pinna-nature of Oyropteris sinuosa, Goeppert, 186. 



• The Structure of Tmesipteris Vieillardi Dang, 186. 



— — • On Acmopyle, a Monotypic New Caledonian Podocarp, 186. 

 Saunders, J. T., On the growth of Daphne, 126. 



A Note on Photosynthesis and Hydrogen Ion Concentration, 315. 



Savoor, S. R. U., Elected Fellow 1919, February 3, 348. 



Saw-dust, Conversion of, into sugar (Purvis), 259. 



Shah, N. M., and Wilson, B. M., On an empirical formula connected with 



Goldbach's Theorem, 238. 

 Shearer, C, The action of electrolytes on the electrical conductivity of the 



bacterial cell and their effect on the rate of migration of these cells in 



an electric field, 263. 

 Shell-deposits formed by the flood of January, 1918 (Lake), 157. 

 Snell, H. J., and Tams, W. H. T., The Natiu-al History of the Island of 



Rodrigues, 283. 

 Stokes, Sir George, and the concept of uniform convergence (Hardy), 



148. 

 Symbolic Logic, An Axiom in (Van Horn), 22. 



Tams, W. H. T., see Snell, H. J. 



Theorem of Dirichlet (Todd and Norton),. 111. 



Theorem of Mr G. Polya (Hardy), 60. 



Thermionic Valve, Self-oscillations of a (Whiddington), 346. 



Todd, H., and Norton, H. T. J., A particular case of a theorem of Dirichlet, 



111. 

 Trigonometrical Series which have a Necessary and Sufficient Condition for 



Uniform Convergence (Jolliffe), 191. 

 Tripathi, S. C, Elected Fellow 1919, February 3, 348. 

 TuRNBULL, H. W., Some Geometrical Interpretations of the Concomitants oi 



Two Quadrics, 196. 



Van Horn, C. E., An Axiom in Symbohc Logic, 22. 



i 



hlet, I 



I 



