a 
KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 
TE AMSTERDAM. 
PROCEEDINGS OF THE MEETING 
of Saturday October 25, 1902. 
eCG —- 
(Translated from: Verslag van de gewone vergadering der Wis- en Natuurkundige 
Afdeeling van Zaterdag 25 October 1902, Dl. XI). 
ee Ties, Bar 52 
H. W. Bakruis RoozrBoom: “A representation in space of the regions in which the solid 
phases, which occur, are the components, when not furming compounds’, p. 279, (with one 
plate). 
H. W. Bakuvuis RoozrBoom: “Equilibria of phases in the system acetaldehyde + paraldehyde 
with and without molecular transformation”, p. 283. 
L. ARONSTEIN and A. S. van Nierop: “On tie action of sulphur on tolucne and xylene”. 
(Communicated by Prof. J. M. van BEMMELEN) p. 288. 
Tu. Weevers: “Investigations of gluco-ides in connection with the internal mutation of 
plants”. (Communicated by Prof. C. A. Lospry pr Brryy), p. 295. 
J. D. van DER Waars: “Some obs ‘rvations on the course of the molecular transformation’, p. 303. 
J. D. var per Waars: “Critical phenomena in partially miscible liquids”, p. 307. 
J.K. A. WERTHEIM Saromonson: “The influence of variation of the constant current on the 
pitch of the singing arc” (Communicated by Prof. P. ZEEMAN), p. 311. 
J. E. Verscuarrecr: “Contributions to the knowledge of van per Waars' ¥-surface. VIL. The 
equation of state and the ¢-surface in the immediate neighbourhood of the critical state for 
binary mixtures with a small proportion of one of the components”, p. 321, (with one plate). 
Continuation p. 336. 
J. Boerke: “On the structure of the light-percepting cells in the spinal cord, on the neuro- 
fibrillae in the ganglioncells and on the innervation of the striped muscles in Amphioxus lan- 
ceolatus”. (Communicated by Prof. T. Prace), p. 350, (with one plate). 
The following papers were read: 
Chemistry. — #A representation in space of the regions in which 
the solid phases, which occur, are the components, when not 
forming compounds.” By Prof. H. W. Baknvis RoozeBoom. 
(Communicated in the meeting of September 27, 1902). 
In the course of my researches, I have often made use of special 
kinds of graphical representations to indicate the limits of the exis- 
tence of single phases or complexes of phases. It was only after 
the year 1896, when it could be taken for granted that the general 
19 
Proceedings Royal Acad. Amsterdam. Vol. V. 
