KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 
TE AMSTERDAM. 
EENS 
VOLUME XXII 
N92: 
President: Prof. H. A. LORENTZ. 
Secretary: Prof. P. ZEEMAN. 
(Translated from: “Verslag van de gewone vergaderingen der Wis- en 
Natuurkundige Afdeeling,” Vol. XXVII). 
CONTENTS, 
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„ ROELS and L. MOLL: “On the Index Loquelae”. (Communicated by Prof. H. ZWAARDEMAKER), p. 98. 
C. A. CROMMELIN, J. PALACIOS MARTINEZ and H. KAMERLINGH ONNES: “Isothermals of monatomic 
substances and their binary mixtures. XX. Isothermals of neon from + 20° C. to —217° C”, p. 108. 
A. SMITS: “Metals and Non-Metals”. (Communicated by Prof. P. ZEEMAN), p. 119. 
je 
. P. BARENDRECHT: “Urease and the radiation-theory of enzyme-action”, p. 126. 
P. N. VAN KAMPEN: “On the phylogeny of the hair of mammals”. (Communicated by Prof. 
WEBER), p. 140. 
G. NORDSTROM: “Note on the circumstance that an electric charge moving in accordance with 
quantum-conditions does not radiate”. (Communicated by Prof. H. KAMERLINGH ONNES), p. 145. 
L. E. J. BROUWER: “Remark on Multiple Integrals”, p. 150. 
Proceedings Royal Acad. Amsterdam. Vol. X XIL. 
