Index. 
627 
Pearce, N. D. F. and Warburton, C., Note on a Collection of Oribatidae 
from British Guiana, 13. 
Peripheral nerves, anatomy of (Barclay-Smith), 207. 
Phenyliodide Chloride and Iodosobenzene Acetate, Reactions of (Hodgson), 
547. 
Phosphorus in Crystalline Egg Albumin (Willcock and Hardy), 119. 
Pig, Microcephalous new-born (Duckworth), 447. 
Placental villi, Syncytial appendages of the (Duckworth), 425. 
Plants in the Tropics, Physiology of (Smith), 296. 
Platinocyanides (Levy), 159. 
Platinocyanides (Levy), 378. 
Pocklington, H. C., The Natural Units of Mass, Length and Time, 152. 
Polarization by solutions, rotation of the plane of (Thomson), 313. 
Potassium, /3 Rays from (Campbell), 211. 
Potassium, Radio-activity of (Campbell), 557. 
Potts, F. A., Elected Fellow 1906, November 26, 320. 
Sexual Phenomena in the Free-living Nematodes, 373. 
Proceedings at the Meetings held during the Session, 1906 — 1907, 318. 
,, ,, ,, „ ,, ,, 1907 1908, 614. 
Procession of Cnethocampa pinivora, Treitschke (Brindley), 98. 
Proportion of the sexes produced by Canaries, Influence of extraneous forces 
upon the (He ape), 201. 
Protozoan Parasites of Frogs and Toads (Dobell), 428. 
Purvis, J. E., The absorption spectra of some compounds obtained from 
pyridine and collidine, 435. 
The absorption spectra of some compounds of pyridine (Third Paper), 
568. 
The influence of a strong magnetic field on the spark spectra of lead, tin, 
antimony, bismuth and gold, 217. 
The influence of a strong magnetic field on the spark spectra of titanium, 
chromium and manganese, 41. 
Purvis, J. E. and Courtauld, R. M., The decomposition and nitrification of 
sewage (1) in alkaline solutions, (2) in distilled water, 354. 
The limitations of the copper-zinc couple method in estimating 
nitrates, 441. 
Purvis, J. E. and Foster, W. H., The absorption spectra of collidine and 
9-chlor-eollidine, 381. 
Purvis, J. E. and Warwick, G. R., The influence of spectral colours on the 
sporulation of Saccharomyccs, 30. 
Purvis, J. E. and Wilks, W. A. R., The influence of light and of copper on 
fer mentati on, 361. 
Rabbit, Russo’s attempt to show differentiation of sex in the ovarian ova of 
the (Heape), 609. 
Radio-activity of the Alkali Metals (Campbell and Wood), 15. 
Radio-activity of Potassium (Campbell), 557. 
