KONINKLIJKE AKADEMIE VAN WEÏENSCIIAITEN 

 TE AMSTERDAM. 



PROCEEDINGS OF THE MEETING 

 of Saturday June 30, 1906. 



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

 Afdeeling van Zaterdag 30 Juni 1906, Dl. XV). 



co2srT'E3sra?s. 



L. E. J. Brouwer: "Polydimeusional Vectordistributions". (Comnuinioatcd by Prof. D. J. 

 Korteweg), p. 66. 



F. M. Jaeger: "On the fatty esters of Cholesterol and l'hyfcosterol, and on the auisotropous 

 li(]uid phases of the Cholesterol-derivatives" (Communicated by Prof. A. P. N. Franchimont), 

 p. 78. 



F.M.Jaeger: "Researches on the thermic and electric conductivity power of crystallised 

 conductors" I. (Communicated by Pruf. II. A. Lokentz), p. 8'J. 



II. W. Bakhuis Roozeboom: "Three-phaselines in chloralalcoholate and anilinchydrochloridc'", 

 p. 99. 



II. IIaoa: On the polarisation of Röntgen rays", p. 104. 



P. VAN RoMBURGii : "Triformiu (^Glyceryl triformatc)", p. 1Ü9. 



P. VAX lloMBURGii and W. van Doussk.n: "On some derivatives of l-S-ó-hexatriene", p. 111. 



L. E. J. Brouwer: "The force field of the non-Euclidean spaces with negative curvature". 

 (Communicated by Prof. D. J. Kokteweg), p. 116. 



A. Pannekoek.: "The luminosity of stars of ditlcrent types of spectrum". (Communicated by 

 Prof. H. G. VAN DE Sande Bakiiuyzen), p. 134. 



Errata, p. 148. 



Proceedings Royal Acad. Anislerdani. Vol. IX. 



