x e d N T F, N "i s. 



Physiology. C. Winkleu and J. Wiardi BeckmaK: „The effect produced u|)on respiration 

 by faradio excitation of some nerve-tracts''. 361. 



PLACENTA of Tarsius (llaematopoiesis in the) and other mamiuals. 167. 



PLAITPOIKT (Measurements on the system of isothermal lines near the) and especially 

 on the process of the retrograde condensation in a mixture of carbonic acid and 

 hydrogen. 243. 288. 333. 



PLAITPOINTCUEVE (An anomaly in the course of the) in a mixture of anomalous sub- 

 stances. 385. 



POINTS OF TRAKSITION (Congealing points and) in mixed crystals of two substances. 101. 



POLE OF THE EARTH (On the motion of the) according to the observations of the 

 years 1890—1896. 42. 



— (Some remarks upon the 14-monthly motion of the) and upon the lengih of its 

 period. 157. 201. 



PRESSURE (Measurements on the change of) by substitution of one component by the 

 other in mixtures of carbonic acid and hydrogen. 328. 



— (The influence of) on the critical temperature of complete mixture. 158. 



— (A standard open manometer of reduced height with transference of) by means 

 of compressed gas. 154. 213. 



— (Variation- of volume and of) in mixing. (I) 179. (11) 232. (HI) 390. 

 QUADRANT-ELECTROMETER (On a Srcellar) and on the measurement of the intensity of 



electric currents made with it. 50. 

 QUANTITY i (Calculation of the second correction to the) of the equation of condition 



of VAN DEK Waals. 273. 

 QUARTics (On Trinodal). 26'i. 

 RACEMic COMBINATIONS (On solubility and meltingpoint as criteria for distinguishing), 



pseudoracemic mixed crystals and inactive conglomerates. 310. 

 RADIATION of light (Considerations concerning the influence of a magnetic field on 



the). 90. 

 RESPIRATION (Attention and). 121. 



— (The efiect produced upon) by faradic excitation of some nerve tracts. 361. 

 RETROGRADE CONDENSATION (Measurements on tlie system of isothermallines near the 



plaitpoint and especially on the process of the) of a mixture of carbonic acid 



and hydrogen. 243. 288. 323. 

 RÖNTGEN-RAYS (Diffraction of). 420. 



ROOZEBOOM (h. w. bakhuis). See Bakhuis Eoozebüom (H. W.). 

 s A N D E BAKHUIZEN (e. F. V A K D E). On the motion of the Pole of the Earth 



according to the observations of the years 1890 — 1896. 42. 



— Some remarks upon the 14-monthly motion of the Pole of the Earth and upon 

 the length of its period. 157. 201. 



SALTS (On synthetically prepared neutral glyceryl-ethereal) — triacylins — of saturated 

 monobasic acids with an even number of 6'-atoms. 338. 



— (On the influence of solutions of) on the volume of animalcells. 26. 103. 371. 

 s c u E Y ( L. T. <;. ). On synthetically prepared neutral glyceryl-ethereal salts — 



triacylins — of saturated monobasic acids with an even number of 6ï-atoms. 338. 



