XXVI CüNTRNTS 



ZEEMAN (p.) presents a paper of Prof. A. Smits and C. A. Lobry de Bruyn : "On 

 the Periodic Passivity of Iron". II. 382. 



— presents a paper of Prof. A. Smits and J. M. Bijvoet : "On the Significance of 

 the Volta-Eöect in Measurements of Electromotive Equilibria". 562. 



— presents a paper of Prof. A. Smits : "On the Phenomenon of Anodic Polari- 

 sation". II. 1349. 



ZERNIKE (f.). and H. Haga. On thermoelectric currents in mercury. 1262. 



— and L. S. Ornstein. The Theory of the Brownian Motion and Statistical Me- 

 chanics. 109. 



— The Scattering of Light by Irregular Refraction in the Sun. 115. 



— Magnetic properties of cubic lattices. 911. 



Zoology. J. F. VAN Bemmelen : "Androgenic origin of Horns and Antlers". 57U. 



— "The value of generic and specific characters, tested by the wingmarkings of 

 Sphingides". 991. 



— J. W. VAN Wyhe : "On the Anatomy of the Larva of Amphioxus lanceolatus 

 and the E.xplanation of its Asymmetry". 1013. 



zwaardemaker (h.) presents a paper of Prof. EuG. Dubois : "The Significance 

 of the Size of the Neurone and its Parts". 711. 



— presents a paper of Prof. EuG. Dubois : "Comparison of the Brain Weight in 

 Function of the Body Weight, between the Two Sexes". 850. 



— and H. Zeehuisen : "On the Sign of the Electrical Phenomenon and the 

 Influence of Lyotrope series observed in this phenomenon". 417. 



— and F. HOGEWIND : "On the spontaneous transformation to a colloidal state of 

 solutions of odorous substances by exposure to ultra-violet light". 13 L 



— and F. Hogewind : "On the Photo-electricity of Gels". 1146. 



