CONTENTS. Vil 



LOREKTZ (h. a.)- Oil the vibrations of electrified systems, placed in a magnetic 

 field. A contribution to the theory of the ZEEMAN-effect. 263. 340. 



— On a simplified theory of the electrical and optical phenomena in moving- 

 systems. 323. 437. 



— Stokes' theory of abernitiou in the supposition of a variable density of the 

 ether. 323. 443. 



MAGNETIC FIELD (On an asymmetry in the change of the spectral lines of iron, radia- 

 ting in a). 27. 98. 



— (Considerations concerning the influence of a) on the radiation of light. 90. 



— (On the vibrations of electrified systems, placed in a). A contribution to the 

 theory of the ZEEMAN-eflect. 263. 840. 



MAGNETIC rotatory dispersion (Measurements on the) of gases. 243. 296. 

 MANOMETER of reduced height (Description of a standard open) with transference 



of pressure by means of compressed gas. 154. 213. 

 MARTIN (k.). On Erackish-wuter deposits of the Mc'.awi in the interior of Borneo. 245. 

 Mathematics. P. H. Schoute: //On the cyclographic space representation of Joachims- 



tual's circles'". 1. 



— J. Caruinaal: //The representtdion of the screws of Ball passing through a 

 ])oint or lying in a plane, according to the method of Caporali."' 258. 



— Jan de Vries: //On Trinodal Quartics". 268. 



— Jan de Vhies; //On the orthoptical circles belonging to linear systems of 

 conies". 305. 



— P. H. ScHOUTE: //A geometrical interpretation of the invariant n [aVf of a 

 binary form a-'^ of even degree". 313. 



— J. C. Klcyver: //On reducible hyperelliptic Integrals". 448. 449. 



MAXIMA (On) and minima of apparent brightness resulting from optical illusion. 7. 

 MEASUREMENT of the intensity (On a 5-cellar ([uadrant-electrometer and on the) of 



electric currents made with it. 56. 

 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. 243. 288. 323. 



— on the magnetic rotatory dispersion of gases. 243. 296. 



— on the change of pressure by substitution of one component by the other in 

 mixtures of carbonic acid and hydrogen. 328. 



Melawi (On Brackish-water deposits of the) in the interior of Borneo. 245. 

 MELTING-PHENOMENA (Ou Congealing- and) in substances showing tautomerism. 176. 

 meltingpoint (On solubility and) as criteria for distinguishing racemic combinations, 



pseudoracemic mixed crystals and inactive conglomerates. 310. 

 meltingpoints (On) in systems of optic isomers. 466. 

 MENDEL E JEFF (On some anomalies in the system of). 148. 

 METHOD of Gaporali (The representation of the screws of Ball passing through a 



point or lying in a plane, according to the method of Capoeali. 258. 

 METHYlchloride and carbonic acid (The composition and the volume of the coexisting 



vapour- and liquid-phases of mixtures of). 83. 

 METHYLIC ALCOHOL (On the action of) on the imides of bibasic acids. 151, 



