498 Index 



PocKLiNGTON, H. C, Standing waves parallel to a plane beach, 308. 



Pollard, S., Elected Fellow 1920, October 25, 485. 



On the term by term integration of an infinite series over an infinite 



range and the inversion of the order of integration in repeated infinite 



integrals, 1. 

 Polya, ]VIr Hardy's extension of a theorem of (Landau), 14. 

 Potts, F. A., A note on vital staining, 231. 

 Pratt, A., Elected Associate 1921, May 16, 490. 

 Primes, Distribution of (Cramer), 272. 



Proceedings at the Meetings held during the Session 1919-1920, 212 



„ 1920-1921, 485. 

 Projecting spectra. Apparatus for (Hartridge), 480. 

 Prosad, K., Elected Fellow 1919, October 27, 212. 

 PuNNETT, R. C, A peculiar case of heredity in the Sweet Pea, 489. 



Quadric, absolute. Transformations with (Baker), 145. 

 Quartics, Bicircular (Baker), 122. 



Ramanujan's trigonometrical function c^ (n), and certain series of arithmetical 



fimctions (Hardy), 263. 

 Rao, C. V. Hanumanta, see Hanumanta. 

 Rectangular axes. Transformations of (Baker), 147. 

 Richmond, H. W., Note on the Diophantine equation t^ +x^ +i^ +z^=Q. See 



Transactions, xxn. 

 RiDEAL, E. K., Elected Fellow 1920, November 22, 486. 



On the Latent Heats of Vaporisation, 291. 



RiESZ, M., Sur le principe de Phragmen-Lindelof, 205. 



Ritchie, A. D., Elected Fellow 1919, November 24, 213. 



Roberts, J. K., Elected Associate 1920, October 25, 485. 



Rogers, L. J., On a Gaussian Series of Six Elements, 257. 



Rotating Fluids (Taylor), 326. 



Rotating liquid elhpsoids (Baker), 190. 



Rotating masses of Hquid, StabiUty of (Baker), 198. 



Rotation of the Non-Spinning Gyrostat (Bennett), 70. 



Rotation of the Non-Spinning Gyrostat (Greenhill and Bennett), 243. 



Rutherford, E., The Inner Structure of Atoms, 486. 



Saunders, J. T., A note on the hydrogen ion concentration of some natural 



waters, 350. 

 Savoor, S. R. U., On rotating liquid cylinders, 216. 

 ScANLAN, D. F. W., Elected Associate 1920, January 26, 214. 



Elected Fellow 1921, February 21, 488. 



ScHLUNDT, W., Elected Associate 1921, February 7, 488. 



Searle, G. F. C, a bifilar method of measuring the rigidity of wires, 61. 



Experiments with a plane diffraction grating, 88. 



Experiments on focal lines formed by a zone plate, 330. 



