Articles in this issue:

On the cyclographic space representation of Joachimstahl's circles
Schoute, P.H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 1-7

On maxima and minima of apparent brightness resulting from optical illusion
Wind, C.H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 7-14

On the relation of the obligatous anaërobics to free oxygen
Beijerinck, M.W.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 14-26

The HALL-effect in electrolytes
Everdingen Jr, E. van
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 27-34

On the chemical and microscopical examination of antimonial alloys for axle boxes
Behrens, H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 35-38

The condition of substances insoluble in water formed in gelatine
Lobry de Bruyn, C.A.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 39-42

On the motion of the Pole of the Earth according to the observations of the years 1890-1896
Sande Bakhuyzen, E.F. van de
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 42-55

On a 5-cellar quadrant-electrometer and on the measurements of the intensity of electric currents made with it
Haga, H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 56-65

On the influence of the dimensions of the source of light in diffraction phenomena of FRESNEL and on the diffraction of X-rays (3rd comm)
Wind, C.H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 65-72

The galvanomagnetic and thermomagnetic phenomena in bismuth
Everdingen Jr, E. van
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 72-82

The composition and the volume of the coexisting vapour and liquid phases of mixtures of Methylchloride and Carbonic acid
Hartman, Ch.M.A.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 83-90

Considerations concerning the Influence of a Magnetic Field on the Radiation
Lorentz, H.A.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 90-98

On an Asymmetry in the Change of the spectral Lines of Iron, radiating in a Magnetic Field
Zeeman, P.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 98-100

Congealing points and points of transition in mixed crystals of two substances
Bakhuys Roozeboom, H.W.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 101-103

On the influence of salt-solutions on the volume of animal cells, being at the same time a contribution to our knowledge of their structure
Hamburger, H.J.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 103-116

Report on the 2nd International Catalogue Conference
Korteweg, D.J.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 117-121

Attention and respiration
Winkler, C.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 121-138

Simple deduction of the characteristic equation for substances with extended and composite molecules
Waals, J.D. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 138-143

The rate of substitution of a nitrogroup by an oxalkyl
Lobry de Bruyn, C.A.
Steger, A.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 144-148

On some anomalies in the system of Mendelejeff
Behrens, H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 148-151

On the action of methylic alcohol on the imides of bibasic acids
Dorp, W.A. van
Hoogewerff, S.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 151-154

Cup-shaped red bloodcorpuscles (chromocraters)
Dekhuyzen, M.C.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 154-157

The influence of pressure on the critical temperature of complete mixture
Lee, N.J. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 158-165

Haematopoiesis in the placenta of Tarsius and other mammals
Hubrecht, A.A.W.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 167-170

On a Contagium vivum fluidum causing the Spotdisease of the Tobacco-leaves
Beijerinck, M.W.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 170-176

On congealing- and melting-phenomena in substances showing tautomerism
Bakhuys Roozeboom, H.W.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 176-179

Variation of volume and of pressure in mixing
Waals, J.D. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 179-191

Equilibriums in systems of three components. Change of the mixing-temperature of binary mixtures by the addition of a third component
Schreinemakers, F.A.H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 191-198

On the accurate determination of the molecular weight of gases from their density
Waals, J.D. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 198-201

Some remarks upon the 14-monthly motion of the Pole of the Earth and upon the length of its period
Sande Bakhuyzen, E.F. van de
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 201-213

A standard open manometer of reduced height with transference of pressure by means of compressed gas
Kamerlingh Onnes, H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 213-227

On mixed crystals of nitrate of kalium and nitrate of thallium
Eijk, C. van
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 229-232

Variation of volume and of pressure in mixing (II)
Waals, J.D. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 232-243

On Brackish water-depostits of the Melawi in the interior of Borneo
Martin, K.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 245-248

On Hydrogel of oxide of iron (ferric-oxide)
Bemmelen, W. van
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 249-253

The equilibrium of systems of three substances in which two liquids occur
Bruijn, B. de
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 253-257

The representation of the Screws of BALL passing through a point or lying in a plane, according to the method of CAPORALI
Cardinaal, J.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 258-263

On Trinodal Quartics
Vries, J. de
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 263-272

Calculation of the second correction to the quantity b of the equation of condition of Van der Waals
Laar, J.J. van
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 273-287

Measurements on the system of isothermal lines near the plaitpoint and especially on the process of the retrograde condensation of a mixture of carbonic acid and hydrogen
Verschaffelt, J.E.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 288-295

Measurements on the magnetic rotatory dispersion of gases
Siertsema, L.H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 296-304

On the orthoptical circles belonging to linear systems of conics
Vries, J. de
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 305-310

On solubility and meltingpoint as criteria for distinguishing racemic combinations, pseudoracemic mixed crystals and inactive conglomerates
Bakhuys Roozeboom, H.W.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 310-313

A geometrical interpretation of the invariant II (ab)2 of a binary form a2n of even degree
Schoute, P.H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 313-321

On the physilogical action of methylnitramine in connection with its chemical constitution
Bellaar Spruyt, G.
Stokvis, B.J.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 321-322

Measurements on the system of isothermal lines near the plaitpoint and especially on the process of the retrograde condensation of a mixture of carbonic acid and hydrogen
Verschaffelt, J.E.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 323-328

Measurements on the change of pressure by replacing one component by the other in mixtures of carbonic acid and hydrogen
Verschaffelt, J.E.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 328-334

On the velocity of electrical reaction
Cohen, E.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 334-338

On synthetically prepared neutral glyceryl-ethereal salts - triacylins - of saturated monobasic acids with an even number of C-atoms
Franchimont, A.P.N.
Schey, L.T.C.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 338-340

On the Vibrations of Electrified Systems, placed in a Magnetic Field
Lorentz, H.A.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 340-359

The effect produced upon Respiration by faradic excitation of some nerve-tracts
Wiardi Beckman, J.
Winkler, C.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 361-371

The influence of salt-solutions on the volume of animal cells
Hamburger, H.J.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 371-385

An anomaly in the course of the plaitpointcurve in a mixture of anomalous substances
Waals, J.D. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 385-390

On variation of volume and of pressure. III
Waals, J.D. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 390-397

On the characteristic equation of v.d.Waals
Boltzmann, L.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 398-404

The galvano-magnetic and thermo-magnetic phenomena in bismuth (second communication)
Everdingen Jr, E. van
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 404-417

On the velocity of electrical Reaction. II
Cohen, E.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 417-420

Diffraction of Röntgen Rays
Haga, H.
Wind, C.H.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 420-427

Simplified Theory of Electrical and Optical Phenomena in Moving Systems
Lorentz, H.A.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 427-442

Stoke's Theory of Aberration in the Supposition of a Variable Density of the Aether
Lorentz, H.A.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 443-448

On the reducible hyperelliptic Integrals
Kluyver, J.C.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 449-465

On melting points in systems of optic isomers
Bakhuys Roozeboom, H.W.
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 466-468

On the deduction of the characteristic equation
Waals, J.D. van der
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 468-473

The galvano-magnetic and thermo-magnetic phenomena in bismuth (second communication continued)
Everdingen Jr, E. van
KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 473-475