CONTENTS. XIX 



Continued. 660. XIV. Graphical deduction of the results of Kuenen's experiments 

 on mixtures of ethane and nitrous oxide. 664. XV. The case that one compo- 

 nent is a gas without cohes'on with molecules that have extension. Limited 

 miscibility of gases. 786. 

 WAAL 8 (j. d. van d e it) presents n paper of Dr. A. Smits: "On the course of the 

 F,T-curves for constant concentration for the equilibrium solid-fluid". 9. 



— A remark on the theory of the vj>-surface for binary mixtures. 524. 



— Contribution to the theory of binary mixtures. 621. II. 727. III. 826. 



— presents a paper of Dr. Ph. KoHNSTAMM : "On the shape of the three-phase 

 line solid-liquid-vapour for a binary mixture". 639. 



— presents a paper of Dr. Ph. Koiinstamm : "On metastable and unstable equili- 

 bria solid-fluid". 648. 



— The shape of the empiric isotherm for the condensation of a binary mixture. 750. 

 Waterstaat. C. Lely : "Velocities of the current in an open Panama canal". 849. 

 wavelengths of formerly observed emission and absorption bands in the infra-red 



spectrum. 706. 



webeb (max). On the fresh-water fish-fauna of New-Guinea. 462. 



weerman (it. a.). Action of potassium hypochlorite on cinnamide. 303. 



went (f. a. f. c.) presents a paper of Dr. W. Burck : "On the influence of the necta- 

 ries and other sugar-containing tissues in the liower on the opening of the 

 anthers". 390. 



wertheim Salomon son (j. K. a.). A few remarks concerning the method 

 of the true and false cases. 222. 



wind-observations (The treatment of). 6S4. 



w i N d (c. H.). A hypothesis relating to the origin of ltöntgen-rays. 714. 



— A. F. H. Daliiuisen and W. E. Kinger. Current measurements at various 

 depths in the North-Sea. (1st Communication). 566. 



winkle it (c.) presents a paper of l J rof. J. K. A. Wertheim Salomonson : "A few 

 remarks concerning the method of the true and false cases." 222. 



— presents a paper of Dr. L. J. J. Muskens : "Anatomical research about cerebel- 

 lar connections", 3i"d Communication. 819. 



wolterson (p.). v. Zwaardemaker (H.). 



wythoff (w. a.). The rule of Neper in the four-dimensional space. 529. 

 yolk (Gastrulation and the covering of the) in the teleostean egg. 800 

 zeeman (p.) presents a paper of Dr. E. E. Mogendorff : "On a new empiric 

 spectral formula". 434. 



— presents a paper of Dr. F. M. Jaeger : "On the influence which irradiation 

 exerts on the electrical conductivity of Antimonite from Japan". 809. 



Zoology. F. Muller : "On the placentation of Sciurus vulgaris". 380. 



— Max Weber : "On the fresh-water fish-fauna of New Guinea". 462. 



— J. Boeke: "Gastrulation and the covering of the yolk in the teleostean 

 egg". 800. 



— A. A. W. Hubrecht: "On the formation of red blood-corpuscles in the 

 placenta of the Hying maki (Galeopithecus)". 873. 



