KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 
TE AMSTERDAM. 
PROCEEDINGS 
VOLUME XIX 
NE. ©. 
President: Prof. H. A. LORENTZ. 
Secretary: Prof. P.-ZEEMAN. 
(Translated from: “Verslag van de gewone vergaderingen der Wis- en 
Natuurkundige Afdeeling,’ Vol. XXV). 
CONTENTS. 
J. G. VAN DER CORPUT: “On an arithmetical function connected with the decomposition of the 
positive integers into prime factors.” I. (Communicated by Prof. J. C. KLUYVER), p. 826. 
J. G. VAN DER CORPUT: “On an arithmetical function connected with the decomposition of the 
positive integers into prime factors.” II. (Communicated by Prof. J. C. KLUYVER), p. 842. 
H. B. A. BOCKWINKEL “Some considerations on complete transmutation”. (First communication). 
(Communicated by Prof. L. E. J. BROUWER), p. 856. 
F. A. H. SCHREINEMAKERS: “In-, mono- and divariant equilibria”. XIII, p. 867. 
A. SMITS and C. A. LOBRY DE BRUYN: “A New Method for the Passification of Iron”. (Communi- 
cated by Prof. P. ZEEMAN), p. 880. 
GUNNAR NORDSTROM: “EINSTEIN’s theory of gravitation and HERGLOTZ’s mechanics of continua”. 
(Communicated by Prof. H. A LORENTZ), p. 884. 
J. TRESLING: “The equations of the theory of electrons in a gravitation field of EINSTEIN deduced 
from a variation principle. The principal function of the motion of the electrons”. (Communi- 
cated by Prof. H. A. LORENTZ), p 892. 
J, K. A. WERTHEIM SALOMONSON: “Electric current measuring instruments with parabolic law of 
deflection”, p. 896. d 
E. HEKMA: “Fibrin-excretion under the influence of an electric current”. (Communicated by 
Prof. H. J. HAMBURGER), p. 900. __ 
Proceedings Royal Acad. Amsterdam. Vol. XIX. 
