546 



Index. 



Pethybridge (G. H.). Award of the 

 Boyle Medal to (1921), 226. 



Photosynthesis and the Eleotrouic Tlieory 

 (Dixon and Poole), 63. 



Photosynthesis and the Klectronic Theory 

 (II) (Dixon and Ball), 4^5. 



Physiography and Glacial Geology of 

 Houthern Patagonia, Studies in the 

 (Kenton), 189. 



Phytujihthovd infestans (Mont.) De Bary, 

 Tlie liionomios of the C'onidia of 

 (Mtjkpht), 442. 



Phytophlhvra infestans, Tlie Sources of 

 infection of Potato Tubers with tlie 

 Blight Fungus (Murphy), 35a. 



Pinite, On a Variety of, occurring at 

 Ballycorus, Co. Dublin (Smsth), 492. 



Plant Cells, The Hydrogen Ion Concentra- 

 tion of (Atkins), 414. 



Plant Distribution, Some Factors affecting 

 the Hydrogen Ion Concentration of the 

 Soil and its Relation to (Atkins), 369. 



Polyspora lini n. gen. etsp., The " Brown- 

 ing " and "(item-Break" Disease of 

 Cultivated Flax [Linum usitatissimum), 

 caused by (Lafperty), 248. 



Poole (H. H.). On the Distribution of 

 Activity in iladium Therapy under 

 different conditions of Screening, 467. 



and H. H. DixoN. Photosynthesis 



and the Electronic Tlieory, 63. 



Potato Tubers, The Sources of Infection of, 

 with the Blight Fungus Phytophtlioru 

 infestans (Mukphy), 353. 



Uadiura Therapy, On the Distribution of 

 Activity in, under diflerent conditions 

 of Screening (Poole), 467. 



Rate of Reaction between Gases and 

 Liquids, A Simple Form of Apparatus for 

 observing, and its use in determining 

 the Rate of Solution of Oxygen by Water 

 under different conditions of Mixing 

 (Becker), 334. 



Rectifier, A Vibrating-Flame, for High- 

 Tension Currents (DowLiNG and Harris), 

 171. 



Eeilly (J-) and W. J. Hickinbottom, 

 Kotes on some Applications of the 

 Method of Distillation in Steam, 131. 



The Concentration and 



Puritication of Alcoliolio Fermentation 



Liquors. Part 1. — The Distillation in 

 Steam of certain Alcohols, 233. 



Eeilly (J.) and W. J. HiOKiNBOTiOM. 

 The Influence of Electrolytic Dissocia- 

 tion on the Distillation in Steam of the 

 Volatile Fatty Acids, 120. 



Rhynehart (J.). On the Life-History 

 and IJionoinios of the Flax Flea-Beetle 

 {Lunyit<irsas pavulus, Payk.), with I'e- 

 scriptiousot the liitherto unknown Larval 

 and Pupal Stages, 497. 



Rigidity of Nickel Wire, The Change iu 

 tlie, with Magnetic Fields (Brown and 

 O'Callaghan), 98. 



Rivers, A Kew Jletliod of Gauging the 

 Discharge of (Joly), 489. 



Self-Ignition of Ether-Air Mixtures, an 

 Investigation into the Causes of the 

 (M'Clellanb and Gii.l), 109. 



Sequoia, The Occurrence of a, at Washing 

 Bay (Johnson and Gilmoku), 345. 



Sheehy (E. J.). The Influence of F'eeding 

 on Milk Fat, 478. 



Smyth (L. B.). On a Vaijety of Pinite 

 occurring at Ballycorus, Co. Dublin, 

 492. 



The Carboniferous Coast-Section at 



Malahide, Co. Dublin, 9. 



Soil, Some Factors affecting tlie Hydrogen 

 Ion Concentration of the, and its Relation 

 to Plant Distribution (Atkins), 369. 



Solution of Atmospheric Nitrogen and 

 Oxygen liy Water, The Determination 

 of the Rate of (Adenet and Beckeii), 

 143. 



Solution of Oxygen by Water under dif- 

 ferent conditions of Mixing, Determina- 

 tionof, by a Simple Form of Apparatus 

 (Becker), 334. 



Southern Patagonia, Studies in the Physio- 

 graphy and Glacial Geology of (Fenton), 

 189. 



Sucrose, A Cryosoopic Method for the 



Estimation of (DtxoN and iilASON), 1. 

 Sucrose, A Determination by means of a 

 Differential Calorimeter of the Heat pro- 

 duced during the Inversion of (Dixo>' 

 and Ball), 153. 



Time Intervals, The Measurement of very 

 Short, by the Condenser-Charging Method 

 (DowLiKG and Donnelly), 165. 



