XYXVI CORNE VE NS as: 
VRIES (JAN DE). On bilinear null-systems, 1156. 
— On plane linear null-systems. 1165. 
— An involution of associated points. 1263. 
VRIES (Miss Mm. s.), The influence of temperature on phototropism in seedlings ot 
Avena sativa. 1170. 
WAALS (J. D. VAN DER) presents a paper of Prof. Pa. Kounsramm: “On vapour- 
pressure-lines of binary systems with widely divergent values of the vapour pres- 
sures of the components”. 96. x 
— presents a paper of Dr. F. E. C. ScrerFer and J. P. Treop: “Determinations 
of the vapour tension of nitrogen tetroxide”. 166. 
— presents a paper of Dr. F. E. C. Scurrrer: “On the system ether-water”. 380. 
— presents a paper of Dr. F. B. C. Scuerrer: “On quadruple-points and the 
continuities of the three-phase lines”. 389. 
— presents a paper of Mr. J. R. Karz: “The laws of surface-adsorption and the 
potential of molecular attraction”. 445. 
— Contribution to the theory of binary systems. XXI. 602. 
— Some remarkable relations either accurate or approximative for different sub- 
stances. 903. 
— The law of corresponding states for different substances. 971. 
— presents a paper of Prof. Pa. Konystamm and Dr. J. Timmermans: “Experi~ 
mental investigations concerning the miscibility of liquids at pressures to 3000 
atmospheres”. 1021. 
— Some remarks on the course of the variability of the quantity 2 of the equa- 
tion of state. 1131. 
— presents a paper of Prof. J. D. van per Waats Jr.: “The law of the partition 
of energy”. 1175. IT. 1355. 
WAALS JR. (J. D. VAN DER). On the law of the partition of energy. 1175. IL. 1355. 
WATER (The system sodium sulphate, mangane sulphate and) at 35°. 1326. 
WATERMAN (H. J.). Mutation of Penicillium glaucum and Aspergillus niger under 
action of known factors. 124. 
— Action of hydrogenious boric acid, copper, manganese, zinc and rubidium on 
the metabolism of Aspergillus niger. 753. 
— Metabolism of tke nitrogen in Aspergillus niger. 1058. 
— Metabolism of the fosfor in Aspergillus niger. 1058. 
— and J. BöeseKrN. A biochemical method of preparation of /-tartarie acid. 202, 
— Potassium sulfur and magnesium in the metabolism of Aspergillus niger. 1349. 
WEATHER FORECAST (A long range) for the East Monsoon in Java. 1063. 
WEBER (MAX) and L. F. pr Beaurorr. On the freshwater fishes of Timor and 
Babber. 235. 
WEBER, (sorPHUs), H. KAMERLINGH ONNEs and C. Dorsman. Investigation of 
the viscosity of gases at low temperatures. I. Hydrogen. 1386. 
— and H. KAMERLINGH ONNEs. Investigation of the viscosity of gases at low tem- 
peratures. II. Helium. 1396. ILI. Comparison of the results obtained with the 
law of corresponding states. 1399. 
