INDEX. 



535 



Molecular configurations, on the 



probabilities of, 51. 

 Molecules, on a method of deter- 

 mining the magnitude of, 220. 

 Mountaius, on the formation of, 299. 

 Natanson (Dr. L.) on the probabili- 

 ties of molecular configurations, 51. 

 Nile Valley, on the geology of the, 



,. 3 °6\ 

 Nitrous oxide, on the refractive 



indices of liquid, 209. 

 Ogilvie (Miss M. M.) on the geology 



of the S. Tyrol, 383. 

 Olenellus-zone in the N.W. High- 

 lands, on the, 131. 

 Ostwald (Prof. W.) on the colour of 



ions, 457. 

 Oxygen, on the spectrum and refrac- 

 tive index of liquid, 205. 

 Parabolic curves, on an instrument 



for drawing, 57. 

 Paulson (A. W.) on auroras observed 



at Godthaab, 143. 

 Peach (B. N.) on the Olenellus-zone 



in the N.W. Highlands, 131. 

 Physical quantities, on the relation 

 of the dimensions of, to directions 

 in space, 234. 

 Pickering (S. U.) on the heat of 

 dissolution of gases in liquids, 35. 

 Platinum-iridium and platinum- 

 rhodium, on the thermoelectrics 

 of, 376. 

 Platinum-thermometers, on the de- 

 termination of low temperatures 

 by, 515. 

 Pleistocene deposits of the Sussex 



coast, on the, 133. 

 Polarization, on electrolytic, 140. 

 Pole (Dr. W.) on colour-blindness, 



100, 439. 

 Postlethwaite (J.) on the dioritic 

 picrite of White Hawse and Great 

 Cockup, 383. 

 Prestwich (Dr. J.) on the raised 

 beaches of the South of England, 

 130, 132. 

 Pump, on an air-mercury, for raising 

 mercury in mercurial pumps, 115. 

 Raised beaches of the South of Eng- 

 land, on the, 130, 132. 

 Raoult's law of the lowering of 



vapour-pressure, on, 411. 

 Rayleigh (Lord) on the stability of 

 the flow of fluids, 59 ; on the in- 

 stability of a cylinder of viscous 



liquid under capillary force, 145 ; 

 on the instability of cylindrical 

 fluid surfaces, 177 ; on the inten- 

 sity of light reflected from water 

 and mercury at nearly perpen- 

 dicular incidence, 309; on the 

 interference bands of approxi- 

 mately homogeneous light, 407 ; 

 on the influence of obstacles 

 arranged in rectangular order 

 upon the properties of a medium, 

 481. 

 Reade (T. M.) on the drift-beds of 

 the N. and Mid- Wales coast, 134. 

 Refractive indices of liquid oxygen, 

 nitrous oxide, and ethylene, on 

 the, 205. 

 Reid (C.) on the Pleistocene deposits 



of the Sussex coast, 133. 

 Resistance of cells, on the measure- 

 ment of the internal, 173. 



, on the equivalent, of parallel 



circuits with harmonic impressed 

 electromotive force, 271. 

 Richmond (H. D.) on the geology 



of the Nile valley, 306. 

 Robb (Dr. W. L.) on oscillations 

 that occur in the charging of a 

 condenser, 389. 

 Rock, on the fusion constants of 



igneous, 1. 

 Rosa (Prof. E. B.) on the specific 

 inductive capacity of electrolytes, 

 344. 

 Rowland (H. A.) on the theory of 



the transformer, 54. 

 Rudski (M. M. P.) on the level of 

 no strain in a cooling homogeneous 

 sphere, 299. 

 Self-induction and distributed static 

 capacity in a conductor, on the 

 effects of, 528. 

 Silver haloid molecule, on the dis- 

 ruption of the, by mechanical 

 force, 46. 

 Smith (E. W.) on the measurement 

 of the internal resistance of cells, 

 173. 

 Smith (F. J.) on an air-mercury 

 pump, for raising mercury in mer- 

 curial pumps, 115. 

 Spectroscopic measurements, on the 

 application of interference methods 

 to, 280. 

 Spectrum of liquid oxygen, on the, 

 205. 



