KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 

 TE AMSTERDAM. 



PROCEEDINGS OF THE MEETING 

 of Saturday September 28, 1907. 



(Translated from: Verslag van de gewone vergadering der Wis- en Natuurkundige 

 Afdeeling van Zaterdag 28 September 1907, Dl. XVI). 



COK"TEH"TS. 



H. J. Hamburger and E. IIekm.i : "Quantitative researches on Phagocytosis. A contribution 

 to the biology of phagocytes", p. 144. 



P. van Rombcrgh: '"The decomposition of penta-erythritol tetraformate on heating", p. 166. 



J. van Beusekom: "On the influence of wound stimuli on the formation of adventitious buds 

 in the leaves of Gnetum Gnemon L.". (Communicated by Prof. F. A. P. C. Went), p. 168. 



A. L. W. E. van der Veen: '"The system of crystallization of the diamond". (Communicated 

 by Prof. G. A. F. Molengraaff), p. 182. 



J. D. van der Waals : "Contribution to the theory of binary mixtures. VI. The plaitpoint 

 line", p. 183. 



H. Kamerlingh Onnes and J. Clav: "On the measurement of very low temperatures. XV 

 Calibration of some platinum-resistance thermometers", p. 200. 



H. Kamerlingh Onnf.s and C. Braak : "Isotherms of diatomic gases and their binary mix- 

 tures: VI. Isotherms of hydrogen between — 104° C. and — 217° C", p. 204. 



II. Kamerlingh Onnes and J. Ci.ay : "On the change of the resistance of the metals at very 

 low temperatures and the influence exerted on it by small amounts of admixtures", p. 207. 



II. Kamerlingii Onnes and G. H. Fabius: "Repetition of de Heen's and Teichner's experi- 

 ments on the critical state", p. 215. 



H. Kamerlingii Onnes and W. H. Keesom : "Contributions to the knowledge of the ^-surface 

 of van der Waals. XV. The case that one component is a gas without cohesion with molecules 

 which have extension. Limited miscibility of two gases". (Second continuation), p. 231. 



J. J. van Laar: "Some remarks on the last observations of Prof. II. Kamerlinoh Onnes and 

 W. H. Keesom', p. 238. 



Errata, p 239. 



10 



Proceedings Royal Acad. Amsterdam. Vol. X. 



