CONTENTS. XXII 
VRIES (JAN DE) presents a paper of Dr. J. Worrr: “Quadratic complexes of 
revolution amd congruences of revolution”. 1084. 
VRIES REILINGH (D. DE). A new method of determining the arterial blood 
pressure in man; at the same time an attempt at estimating the influence of the 
arterial wall on it. 1181. 
WAALS (J. D. VAN DER). Quasi-association or molecule-complexes. 107. IL. 494. 
— presents a paper of Dr. EF, E. C. Scuerrer: 7On the continuous connection 
between the three phase lines which indicate the equilibria between the two com- 
ponents in the solid condition with liquid and vapour respectively, in a binary 
system”. 158. 
— presents a paper of Prof. A. Smits : “On critical endpoints in ternary systems’, 342. 
— presents a paper of Dr. Jean TrmMerMANs: “The critical phenomena of dissolu- 
tion of mixtures with normal components examined under variable pressure”. 507, 
— presents a paper of Prof. Pa. Kounstamm and Dr. L. 8. ORNSTEIN: “On Nernst’ 
theorem of heat”. 700. 
— presents a paper of Prof. Pa. Konnstamm: “On osmotic temperatures and the 
kinetic signification of the thermodynamic potential.” 778. 
— presents a paper of Prof. Pa. Konnstamm and Dr. F. E. C, Scuerrer: “Ther- 
modynamic potential and velocities of reaction”. 789. 
— presents a paper of Prof. A. Smits and Dr. H. L. pe Leeuw: ‘Confirmations 
of the new theory of the phenomenon allotropy”. I. 822. 
— presents a paper of Prof. Pa. Kounstamm and Dr. J. TIMMERMANS: “On vapour- 
pressures in binary systems with partial miscibility of the liquids.” 865. 
— On the value of the critical quantities. 1211. 
— Some remarks on the value of the volumes of the coexisting phases of a simple 
substance I. 1253. 
water-Sodium sulphate-Sodium chloride-Copper sulphate-Cupric chloride (Equilibria 
in the system). 1163. 
WEBER (MAX). A new case of parental care among fishes. 583. 
WENCKEBACH (Kk. F.) presents a paper of Dr. D. pr Vrres ReILIncH: “A new 
method of determining the arterial blood-pressure in man; at the same time an 
attempt at estimating the influence of the arterial wall on it”. 1181. 
WENT (Fr. A. F. C.) presents a paper of Dr. A. A. L. Rurarrs: “The influence of 
temperature on the presentation-time in geotropism”. 476. 
— presents a paper of Dr. S. L. Scnouren: “Pure cultures from a single cell, 
isolated under the microscope”. 840. 
— presents a paper of Mr. W. H. Arisz: “On the connection between stimulus and 
effect in phototropic curvatures of seedlings of Avena sativa”. 1022. 
WESTON normal cell (The electromotive force of the). 587. 
WICHMANN (A.). On the volcanic eruption in the island of Téon (‘Tijau) in 1659, 485. 
— presents a paper of Dr. J. Scumutzer: “On the orientation of microscopic 
crystal-sections”. 720. 
— presents a paper of Dr. J. Scumurzer: “On the orientation of crystal-sections”. 
1031. 
