XX CONTENTS 



Physics. M. J. Huizinga: "The Uiiidirectional Resist;ince of Crystal Detectors". 1248. 



— H. Haga and F. Zeunike: "On therraoelectric currents in mercury". 1262. 



— D. Coster: "On the use of the audion in wireless telegraphy". 1294. 

 Physiology. O. C. Heringa: "On the Peripheral ISensilive Nervous System". 26. 



— C. Eykman and 1). .1. Hdlshoff Pol: "Experiments with Animals on the 

 Nutritive Value of Standard Brown-Bread and While-Bread". 48. 



— p[. Zwaardkmaker and F. Hogewind : "On the spontaneous transformation to 

 a colloidal state of solutions of odorous substances by exposure to ultraviolet 

 light". 181. 



— S. DE Boer : "On the influence of the increase of the osmotic pressure of the fluids 

 of the body on different cell-substrata". 151. 



— H. Zwaardemaker and H. Zeehuisen : "On the Sii^n of tlie Electrical Pheno- 

 menon and the Influence of Lyotrope series observed in this phenomenon". 417. 



— G. Gryns : "Is there any Kelation between the Capacity of Odorous Substances 

 of Absorbitg Kadiant Heat and their Smell- Intensity"? 47(5. 



— Miss M. A. VAN Herwerden: "Efl'ects of the Hays of Kadiuin on the Oogenesis of 

 Daphnia pulex". 54n. 



— H. J. Hamburger and R. Brinkman : "The conduct of the kidneys towards 

 some isomeric sugars (Glucose, Fructose, Galactose, Mannose and Saccharose, 

 Maltose, Lactose)". 548. 



— D. J. Hulshoff Pol: "Our equilibrium-organ". 626. 



— D. J. Hulshoff Pol: "Cerebellar ataxia as disturbance of the equilibrium- 

 sensation". 637. 



— EuG, Dubois: "The SignificHUce of the Size of the Neurone and its Parts". 711. 



— I. K. A. VVertheim Salomonson • "A new ophthalmoscope". 937. 



— I. K. A. Wertheim Salomonson and Mrs. Ratu Langi-Houtman : "Tonus 

 and farad ic tetanus". 941. 



— H. Zwaardemaker and F. Hogewind : "On the Photo-electricity of Gels". 1146. 



— I. K. A. Wertheim Salomonson: "The measurement of Chronaxia". 1152. 

 PLACENTA (The Involution of the) in the Mouse after the Death of the Embryo. 231. 

 planck's Formula (.\nalogy with). On the Equation of State for Arbitrary Tem- 

 peratures and Volumes. 11S4. 



plane translation theorem (Remark on the). 935. 

 POL (d. J. hulshoff). Our equilibrium-organ. 626. 



— Cerebellar ataxia fxs disturbance of the equilibrium-sensation. 637. 



— Experimental cerebellar-atactic phenoraeua in diseases lying extra-cerebellar. 1095. 



— and C. Eykman. Experiments with Animals on the Nutritive Value of Standard 

 Brown-Bread and White- Bread. 48. 



PC ST MA (o.). On friction in connexion with Brownian movement. 616. 



precession-motion (On the arising of a) owing to the non-euclidian linear element 

 of the space in the vicinity of the sun. 533. 



Psychology (Experimental). E. D. Wiersma; "The Psychology of Conditions of Con- 

 fusion". 312. 



