KONINKLIJKE AKADEMIE VAN WETENSCHArPEN 

 TE AMSTEKDAM. 



PROCEEDINGS OF THE MEETING 

 of Saturday September 26, 1903. 



(Translated (Voiii : Verslag van de gewone vergadering der Wis- en Natuui kundige 

 Afdeeling van Zaterdag 26 September 1903, Dl. XII). 



COISTTE^TTS. 



A. S.Mrrs: "Tlie course ut" the solubility curve in tlie region ot' eriticul temperatures of binary 

 mixtures". (Communicated by Prof. II. W. Bakhuis Hoozeboom), p. 171. 



Ph. van IIarreveld: "On the penetration into mercury of the roots of freely floating germi- 

 nating seeds". (Communicated by Prof. J. W. Moll), p. 182. (With one plate). 



Jan i>e Vries: "The harmonic curves belonging to a given plane cubic curve", p. 197. 



A. F. Holleman: "Preparation of cyclohexanol", p. 201. 



Th. Weevers and Mrs. C. J. Weevers — de Graaff: "Investigations of some xanthine deri- 

 vatives in connection with the internal mutation of plants". (Communicated by Prof. C. A. 

 LoBRY DE Bruyn), p. 203. 



J. van DE Griend Jr.: '•Rectifying curves". (Communicated by Prof. J. Cardinaal), p. 208. 

 (With one plate). 



J. BoEivE: "On the development of the niyocard in Teleosts". (Communicated by Prof. 

 T. Place), p. 218. (With one plate). 



Extract from a letter of Mr. V. Williot to the Academy, p. -220. 



The following papers were read: 



Chemistry. — "The course of the soIahllUij curve in the reylon of 

 crUlad teiiiperatares of hlnar)/ iiiivtares'' '). Hy Dr. A. Smits. 

 (Coiniïiunicatcd by Prof'. H. W. Bakhuis Roozkboom). 



The resiills of" the ex[)criineii(8 on eriticjil tcniperafnres ot' l)iiu\ry 

 nii.xtures, whieli have been suggested b}^ the theory ot' van deh Waai-s, 

 and the completion of' tlie pressure-temperature-concentration-diagi-ani 



tor Ihe e(iiiilii)i'iiiin of solid phases \\\\\\ li(|iii(l and \'a|)(uir hilelv 

 given by Bakihis IvOOZEBOOM -), made il |n'(ti)able thai Ihe [lending 



1) My first communication on this subject appeared in Zeitschr. f. Elektrocli. 

 33, GG3 (1003). 



2) Proc. Royal Academy Amsterdam 190:2, 270. 



12 



Proceedings Royal Acad. Amsterdam. Vol. VI. 



