IV CONTENTS. 



Bolk (L.) presents a paper of Dr. P. Rötiiig: "Contributions upon Neurobiotaxis'*'. 296. 



— presents a paper of Mr. 11. A. Vermeulen: "Note on the size of the dorsal 

 motor nucleus of the Xth nerve in regard to the development of the stomach". 305. 



— presents a paper of Dr. A. J. Hovy : "On the relation between the (juantity 

 of white and grey substance in the central nervous system". 311. 



— presents a paper of Prof. A. .7. P. van den Euork : „On pieric sutures and 

 pteric bones in the iiuman skull". 634. 



— presents a paper of F. 'J'heunisskn : "T!ie arrangement of the motor roots and 

 nuclei in the brain of Acipenser ruthenus and Lepidosteus osseus" 1032. 



ROLTZMANN (A uiechauical theorem of) and its relation to the theory of energy 



quanta. .591. 

 BONN EM A (j. II.). The orientation of the shells of Beyrichia tuherculata K loo en 



sp. 67. 



— Contribution to the knowledge of the genus Kloedenella Ulutcii and Bassler. 1105. 

 BOBACITE (KöNTGENpatterns of) obtained above and below its inversion-temperature. 792. 

 bübnwateb(j. til). On the synthesis of amido-oxalylbiuretcoNiia ". 198. 



I 



COMI CON II CON 1/2 



Botany. C. van Wisselingh : '-On the nucleolus and karyokinesis in Zygneraa". 11. 



— W. H. Abisz: "Positive and negative phototroi)y of the apex and base in oat- 

 seedlings (Avena sntiva)". 363. 



— W. 11. Arisz : "Adjustment to light in oats". 615. 



— A. H. Blaauw : 'The primary photo-growth reaction and the cause of the 

 positive phototropisra in Pliycomyces nitens". 774. 



— J. A. Honing: ''Experiments on hybridisation with Canna indica". 835. 



— Z. Kamerling: "Kegulation of the transpiration of Viacuiu album and lihipsalis 

 cassylha". 1008. 



*— T. Tammes : "The explanation of an apparent exception to Mendel's law of 

 segregation". 1021. 

 Brain (On the relation between the quantity of) and the size of the body in verte- 

 brates. 647. 



— (The arrangement of the motor roots and nuclei in the) of Acipenser ruthenus 

 and Lepidosteus osseus. 1032. 



BR A VATS (Tlie theory of) (on errors in space) for polydimensional space, with appli- 

 cations to correlation. 1124. 



Broek (a. j. p. van den). On pteric sutures and pteric bones in the human skull. 634. 



BROUWER (11. a.). On zonal amphiboles in which the plane of optic axes of the 

 margin is normal to that of the central part. 275. 



— On homoeogeneoi;s inclusions of Kawah Tiljen, Goentoer and Krakatau and their 

 connection with the surrounding eruptive rocks". 995. 



Bruin (g. d e) and Ernst Cohen: On a new principle for the direct determination 

 of osmotic pressure. 160. 



— The influence of pressure on the EMF of the lead-accumulator. 161. 

 B Ü ri N E R (R. II.). Colloids and the phase rule. 60. 



butane (The virial-coefhcient B for normal). 350. 



