KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 
TE AMSTERDAM. 
PROCEEDINGS OF THE MEETING 
of Saturday January 30, 1915. 
Vor. XVII. 
De 
President: Prof. H. A. Lorentz. 
Secretary: Prof. P. Zeman. 
(Translated from: Verslag van de gewone vergadering der Wis- en Natuurkundige 
Afdeeling van Zaterdag 30 Januari 1915, Dl. XXIII. 
EUT LE ENT EE 
J. P. Kurnen: “On the measurement of the capillary pressure in a soap-bubble”, p. 946. 
H. KAMERLINGE ONNES, C. DORSMAN, and G. Horst: “Isothermals of di-atomic substances 
and their binary mixtures. XV. Vapour-pressures of oxygen and critical point of oxygen 
and nitrogen’. p. 950. 
E. Marrras, H. KAMERLINGH Onnes, and C. A. CROMMEDIN: “The rectilinear diameter of 
nitrogen”, p. 953. 
C. A. CROMMELIN: “Isothermals of di-atomie substances’and their binary mixtures, XVI 
Vapour-pressures of nitrogen between the critical point and the boiling point”. (Commu- 
nicated by Prof. H. KAmMERLINGH ONNES), p. 959. 
A. Sits and S. C. Boxnorsr: “On the vapour pressure lines of the system phosphorus.” III. 
(Communicated by Prof. J. D. van DER WAALS). p. 962. 
A. Smits and S. C. Boxuorsr: “Further particulars concerning the system phosphorus,’ 
(Communicated by Prof. J. D. van DER Waars), p. 973. 
J. Boeke: “On the termination of the efferent nerves in plain muscle=cells, and its bearing 
on the sympathetic (accessory) innervation of the striated muscle-fibre”, p. 982. (With 
one plate). 
J. Boeke: “On the mode of attachment of the muscular fibre to its tendonfibres in the strid* 
ted muscles of the vertebrates”, p. 989. 
J. Droste: “On the field of a single centre in Erysrer’s theory of gravitation’. (Communi- 
cated by Prof. H. A. Lorentz), p. 998. 
F. E. C. Scuerrer: “On gas equilibria, and a test of Prof. J. D. van per Waars JR.’s 
formula”. If. (Communicated by Prof. J. D. van per Waats), p. 1011. . 
A. F. Horreman: “The replacement of substituents in benzene derivatives”, p. 1027. 
P. van Rompuren and Miss. D. W. WensiNK: “On the interaction of ammonia and methyl« 
amine on 2.3.4-trinitrodimethylaniline”’, p. 1034. 
C. H. Sturrer: “The influence of the hydration and of the deviations from the ideal gas- 
laws in aqueous solutions of salts on the solidifying and the boiling points”. (Communi- 
cated by Prof. A. F. HorreMaN), p. 1036. 
W. pr Sirrer: “On the figure of the planet Jupiter”, p. 1047. 
Ernst Conen and W. D. Hetperman: “The Allotropy of Cadmium.” V, p. 1050. 
Ernst Conen and W. D. Hetprerman: “Note on our paper: The Allotropy of Lead”. I, p. 1055. 
JAN DE Vries: “Characteristic numbers for a triply infinite system of algebraic plane curves”, 
p- 1055. 
J. P. Kurenen: “The diffusion-coefficient of gases and the viscosity of gas-mixtures.” p. 1068. 
Errata, p. 1073. 
$ 
63 
Proceedings Royal Acad. Amsterdam. Vol. XVII. 
