ns (jf. D. 4 van dee) presents a paper of Prof. A. Smits and E. C. Witsenburg: 
“On the phenomena which occur when in a ternary system the plaitpoint surface meets 
— presents a paper of Prof. A. Smits: ‘ On retrogressive melting-points lines.” 227. 
— presents a paper of Prof. A. Smits: “The P-T-X^spacial representation of the 
system ether-authraquinone.” 231. 
— presents a paper of Dr. J. Timmermans and Prof. Ph. Kohnstamm: “On the 
influence of the pressure on the miscibility of two liquids.” 235. 
— presents a paper of Prof. A. Smits: “The photo- and electrochemical 
equilibria.’' 35S. 
— presents a paper of Prof. Ph. Kohnstamm : “A short reply to Kr. van Laar's 
remarks.” 584. 
water (On the compounds of ammonia and). 186. 
— (Contribution to the knowledge of the movement of) in plants. 574. 
— natrium sulphate (On the system). 244. 
watersecretion in plants (Contribution to the knowledge of). 306. 400. 
N (b. a.). On a synthesis of aldehydes and indols. 42. 
s (th.). The physiological significance of certain glucosides. 193. 
ierre) and H. Kamerlingh Oknes. lie-ea 
gnetizatic 
. 649. 
• c.) r 
Pekei 
the relation between the presentation time and intensity of stimulus in geotropic 
- presents a paper of Dr. Th. Wbevers: “The physiological significance of certain 
glucosides.” 193. 
- presents a paper of Mr. J. Kuyper: “The influence of temperature on the respi¬ 
ration of the higher plants”. 219. 
- presents a paper of Mr. J. J. Smith: “On Distylium stellare 0. K.and Aporosa 
i J. J. 
>ry of geotropism as proved by experin 
- The inadmissibility of the s 
of Miss G. J. Pekelharing ” 343. 
chmanK (a.). The fens of the Indian Archipelago. 79. 
- (Some brief remarks relating to the communication of Prof.). On fen formations 
in the East-Indinn Archipelago.” 74. 
.son and Martin (Remarks on the experiments of) on the velocity of rotation of 
the electric discharge in gases in a radial magnetic field. 428. 
n a w e r (b.) and P. Zeeman. The magnetic separation of absorption lines in 
connexion with sun-spot spectra. 584. 
s s e L i s g h (c. v a n). On the tests for tannin in the living plant and on the 
physiological significance of tauain. 685. 
tsenbubg (e. c.) and A. Smits. On the phenomena which occar when in a 
ternary system the plaitpoint snrface 
an (Sap raising forces in living). 563. 
(w. 
sheet three-pbast 
he first rank in tl 
urface. 182 
