CONTENTS, XXVII 
WENT (F. A. F. C.) presents a paper of Dr. Jou. H. van Burkom: “On the con- 
nection between phyllotaxis and the distribution of the rate of growth in the 
stem”. 1015. 
— presents a paper of Miss M. S. pr Varies: “The influence of temperature on 
phototropism in seedlings of Avena sativa”. 1170. 
WERTHEIM SALOMONSON (J. K. A.). v. SALOMONSON (J. K. A. Werrgerm). 
WIBAUT (J. P.) and A. F. Hotteman. On the nitration of the chlorotoluenes. 594. 
WICHMANN (A). On rhyolite of the Pelapis-islands. 347. 
— presents a paper of Dr, L. Rurren: “Orbitoids of Sumba”. 461. 
WINKLER (c.) presents a paper of Dr. L. J. J. Muskens: “The posterior longitu- 
dinal fascicle and the manege movement”. 727. 
— presents a paper of Dr. J. H. M. Kunssens: “Form and function of the trunk- 
dermatome tested by the strychnine segmentzones”. 740. 
— On localised atrophy in the lateral geniculate body causing quadrantic hemi- 
nopsia of both the right lower fields of vision. 840. 
— presents a paper of Dr. C. T. vaN VALKENBURG: “On the occurrence of a 
monkey-slit in man”. 1040. 
WISSELINGH (C. VAN). On the demonstration of carotinoids in plants. Ist. com- 
munication. 51]. 2nd. Communication. 686. 3rd. Communication. 693. 
— On karyokinesis in Eunotia major Rabenh. 1088. 
— On intravital precipitates. 1329. 
WOLFF (L. K.) and E. H. Bicaner. On the behaviour of gels towards liquids and 
their vapours. 1078. 
woop (R. w.) and P. Zeeman. A method for obtaining narrow absorption lines of 
metallic vapours for investigations in strong magnetic fields. 1129, 
WOUDE (W. vAN DER). On Steinerian points in connection with systems of nine 
g-fold points of plane curves of order 39. 938, 
ZEEMAN (P.) presents a paper of Mr. T. van LonuizEN: “Series in the spectra of 
Tin and Antimony”. 31. 
— presents a paper of Mr, T. van Lonuizen : “Translation series in line-spectra”. 156 
— On the polarisation impressed upon light by transversing the slit of a spec« 
troscope and some errors resulting therefrom. 599, 
— The red lithium-line. 1130. 
— and C. M. Hoogensoom. Electric double refraction in some artificial clouds 
and vapours. 178. 
— and R. W. Woop. A method for obtaining narrow absorption lines of metallic 
vapours for investigations in strong magnetic fields. 1129. 
zinc and rubidium (Action of hydrogenious boric acid, copper, manganese) on the 
metabolism of Aspergillus niger. 753. 
Zoology. Max Weger and L. F. pe Braurorr: “On freshwater fishes of Timor and 
Babber”. 235. 
ZWIERS (H. J.). Researches on the orbit of the periodic comet Houmes and on the 
perturbations of its elliptic motion. V. 192. 
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