x GON EE ATs; 
Mathematics. J. CARDINAAL : An application of the involutions of higher order.” 234, 
— W. Kapreyn: ”On some special cases of MonGr’s difterential equation”. 241. 326. 525. 
— J. C. Krurver: /Bore.’s formulae for divergent series”. 302. 
— JAN DE Vries: „On twisted quintics of genus unity.”’ 374. 
— P. H. Scuoute: „On rational twisted curves”. 421. 
— JAN DE Varies: „On orthogonal comitants.” 485. 
— P. H. Scuoute: On the locus of the centre of hyperspherical curvature 
for the normal curve of z-dimensional space.” 527. 
— P. H. Scnoure: /The theorem of Joacuimstuat of the normal curves”. 593. 
— J. C. Kiuyver: vApproximation formulae concerning the prime numbers not 
exceeding a given limit.” 599. 
MEASUREMENTS on the magnetic rotation of the plane of polarisation in oxygen at 
different pressures. 19. 
MELLE (M. A, V AN). Some reflexes on the respiration in connection with LaBorDE’s 
method to restore, by rhythmical traction of the tongue, the respiration suppressed 
in narcosis, 640. 
MERCURIC IODIDE and bromide (Mixed crystals of). 81. 146. 
MERCURIC OXIDE (The alleged identity of red and yellow). [. 273. IL. 407. 458. 
MERCURY (On isomorphous compounds of gold and). 163. 
MERCURY PUMP for compressing pure and costly gases under high pressure. 406, 437. 
METHOD (A simple and rapid) for preparing neutral Pikrocarmine. 409, 
— for the investigation (The determination of the refractivity as a) of the compo- 
sition of co-existing phases in mixtures of acetone and ether. 101. 
METHODS and apparatus used in the Cryogenic Laboratory. I. 129. IL. 406. 437. 
MEULEN (Ht. TEX) and S. Hoocewerrr. Contribution to the knowledge of 
Indican. 520. 
MICROMANOMETER (Investigations with the). 88. 
MIXTURES of acetone and ether (The determination of the refractivity as a method 
for the investigation of the composition of co-existing phases in). 101. 
mixtures of HCl and C, H, (The determination of isothermals for). 40. 
MOLECULAR potential function (A remark on the) of Prof. van per Waats. 163. 
MOLL (J. w.) presents a paper of Miss T, Tammes: „Pomus in Pomo.” 331. 
MONG R's differential equation (On some special cases of). 25]. 326. 525. 
MONOTREME-SKULL (The results of a comparative investigation concerning the palatine- 
orbital- and temporal regions of the). 81. 
MONTAGNE (pe. J.). The action of hydrogen-nitrate upon the three isomeric chloro- 
benzoic acids and some of their derivatives. 407. 461. | 
MOTION of the pole of the earth (The 14-monthly period of the) from determinations 
of the azimuth of the meridian marks of the Leiden Observatory from 1882 — 
1896. 546. 
narcosis (Some reflexes on the respiration in connection with LABORDE’s method 
to restore, by rhythmical traction of the tongue, the respiration suppressed 
in). 640. 
NITRATION (On the) of benzoic acid and its methylic and ethylic salts. 4. 
— (On the) of dimethylaniline dissolved in concentrated sulphuric acid. 342. 
34M 
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