Index. 399 



Platinum, On the positive leak from hot (Richardson), 58. 

 Pleistophora periplanetae, Lutz and Splendore, Life-history of (Perrin), 204. 

 Polarization phenomena in the Eclipse 1905 August 30 (Newall), 197. 

 Pollen, Abortive development of the, in certain Sweet-Peas (Lathyrus odoratus), 



(Gregory), 148. 

 Portable Gold-leaf Electrometer for low or high Potentials (Wilson), 184. 

 Proceedings at the Meetings held during the Session, 1904 — 1905, 174. 



„ „ „ „ „ „ 1905-1906,387. 



Punnett, R. C. and Bateson, W., A suggestion as to the nature of the 



"walnut" comb in Fowls, 165. 

 Purvis, J. E., The influence of very strong electro-magnetic fields on the 



spark spectra of gold, antimony, bismuth, lead and tin, 82. 



The influence of a very strong magnetic field on the spark spectra of 



palladium, rhodium and ruthenium, 325. 



Experiments on the band-spectrurn of nitrogen in a strong magnetic 



field, 354. 

 Pyridine, Chlorination of Methyl derivatives of. Part 1 : 2-Methyl Pyridine 

 (Sell), 119. 



Quintic, General Ternary. See Richmond, H. W. 



Radiation, Experiments on Penetrating (Cooke), 160. 



Radiation from radio-active substances (Noda), 356. 



Radio-activity of Metals and their Salts (Campbell), 282. 



Radio-activity, Absence of excited, due to temporary exposure to y rays 



(Thomson), 124, (Bumstead), 125. 

 Radium and other Salts on Gelatin, action of (Rudge), 258. 

 Rats, Inheritance of coat-colour in (Doncaster), 215. 

 Recombination and the size of gaseous ions, The rate of (Thomson), 170. 

 Reflection of Sound at a Paraboloid, Part II (Sharpe), 133. 

 Respiration and Vitality (Blackman), 390. 

 Rhodium, Spark spectra of, etc. (Purvis), 325. 

 Richardson, O. W., Note on the Diffusion of Hydrogen through Palladium, 



27. 



Note on the positive leak from Hot Platinum in Air at Low Pressures, 



58. 



The effect of Hydrogen on the discharge of Electricity from Hot 



Platinum, 192. 

 Richmond, H. W., On the reduction of the general ternary quintic to 



Hilbert's canonical form, 296. 

 RlYERS, W. H. R., Demonstration of new apparatus for Psychological Tests, 



392. 

 Robb, A. A., Elected Fellow 1905, Nov. 27, 389. 

 Routgen Radiation, Secondary (Thomson), 322. 

 Hi'iHiK, \Y. A. 1).. Kxnerinients on the retention of an electric charge by 



gases, 194 



