X CONTENTS 



Intensive drying (The influence of) on internal conversion. I. 266. 



Invarianten (Ueber) von Bilinearformen. 801. 



Isotherms of di-atomic substances and their binary mixtures. XX. The 

 critical curve of oxyfien-nitrogen mixtures, the critical phenomena and 

 some isotherms of two mixtures vi'ith 50 " q and 75 "/o by volume of 

 oxygen in the neighbourhood of the critical point. 49. 



Janse (J. M.). On stimulation in auxotonic movements. 171. 



Julius (W. H.) and M. Minnaert. The relation between the widening 

 and the mutual influence of dispersion lines in the spectrum of the 

 sun's limb. 329. 



Kaiser (Miss L.). Contributions to an experimental phonetic investigation 

 of the Dutch language. I. The short o. 745. 



Kamerlingh Onnes (H.) v. Onnes (H. Kamerlingh). 



Kappers (C. U. Ariens). The ontogenetic development of the corpus 

 striatum in birds and a comparison with mammals and man. 135. 



Katz (J. R.). Further researches on the antagonism between citrate and 

 calcium salt in biochemical processes examined by the aid of substituted 

 citrates. (First comm.) 542. 

 — Researches on the nature of the so-called adsorptive power of finely 

 divided carbon. 1. The binding of water by animal carbon. 548. 



Keesom (W. H.) and J. de Smedt. On the diffraction of Röntgen-rays in 

 liquids. II. 112. 



Ketones (The photo-catalytic influence of some series of) on the light 

 oxidation of ethyl alcohol. 443. 



Kloosterman (H. D.). A theorem concerning power-series in an infinite 

 nuirber of variables, with an application to Dirichlet's series. 278. 



Kluyver (J. C). On Euler's constant. 316. 



KöLMEL (F.). Ueber die zu einem Punkte und einer Geraden gehörigen 

 Polarkurven inbezug auf eine gegebene algebraïsche Kurve. 783. 



Komitantensystem (Ueber das) zweier und dreier ternarer quadratischer 

 Formen. 2. 



Kraay (G. M.) and L. K. Wolff. The splitting of lipoids by bacteria. 1. 436. 



Kruyt (H. R.) and W. A. N. Eggink. The electro-viscous effect in rubber- 

 sol. 43. 



Kudo (Kyozo). Contributions to the knowledge of the brain of bony fishes. 65. 



Kuenen (J. p.), T. Verschoyle and a. Th. van Urk. Isotherms of di-atomic 

 substances and their binary mixtures. XX. The critical curve of oxygen- 

 nitrogen mixtures, the critical phenomena and some isotherms of two 

 mixtures with SO",, and 75 "/o by volume of oxygen in the neighbourhood 

 of the critical point. 49. 



KuRVE (Ueber die zu einem Punkte und einer Geraden gehörigen Polarkurven 

 inbezug auf eine gegebene algebraïsche). 783. 



