equilibrium (The oscillations about a position of) where a simple linear relation exists 
between the frequencies of the principal vibrations. 1st part. 619. 2nd. part. 785. 
erratum. 88. 179. 546. 774. 845. 
ether-anthraquinone (The P-T-X-spacial representation of the system). 281. 
FEN formations (On) in the East-Indian Archipelago. 74. 
FEN9 (The) of the Indian Archipelago. 70. 
ferromagnetic compounds and alloys (The magneto-optic KERR-effect in). 835. 
flora of Java (Contribution to the knowledge of the). V. 108. VI. 116. 
flueggea serrata MIQ. (Some remarks on the nomenclature and synonymy of 
Xylosma leprosipes Clos., X. fragrans Decne and). 116. 
foramen magnum (On the position and displacement of the) in the primates. 862. 
— (On the slope of the) in primates. 525. 
fossils (On jurassic) as rounded pebbles in North Brabant and Limburg. 422. 
foyaite (Pienaarite, a melanocratic) from Transvaal. 547. 
franchimont (a. p. n.). Gn sodium-alkyl carbonates. 303. 
— presents a paper of Dr. Otto de Vries: “The abnormal reduction of an aromatic 
nitrocompound with tin and hydrochloric acid and an interesting case of 
dimorphism”. 305. 
franchimont (a. f. n.) and E. Kramer. On derivatives of piperazine. 452. 
functions (Investigation of the) which can he built up by means of infinitesimal 
uses (Isotherms of monatomic) and their binary mixtures. III. Date concerning neon 
and helium. 175. 
— (fiemarks on the experiments of Wilson and Marten on the velocity of rotation 
of the electric discharge in) in a radial magnetic field. 428. 
reology. A. Wichmann: “The fens of the Indian Archipelago”. 70. 
— G. A. F. Molengbaaff: “On oceanic deep-sea deposits of Central-Bomeo”. 141. 
— P. Tesch : “On jurassic fossils as rounded pebbles in North Brabant and Limburg”.422. 
geometry (On pehtaspheric). 19. 
Geophysics. J. P. van der Stok: “On the deten 
Transvaal”. 547. 
the presentation 1 
geotropic curvatures (Investigations on the relat 
and intensity of stimulus in). 65. 
geotropjsm (The inadmissibility of the Statolith theory of). 343. 
GILT AY (J. w.) and M. de Haas., On the motion of the bridge of the violin. 513. 
glucosides (The physiological significance of certain). 193. 
HAAS (M. de) and J. w. Giltay. On the motion of the bridge of the violin. 513. 
HELIUM (Data concerning neon and). 175. 
HERMAN IDES (J.) About odour-affinity, based on experiments of (-). 90. 
HOLLBMAN (a. f.) presents a paper of Dr. E. H. B6chnbr: “On the radioactivity 
of Prof. A. Smits and 8. Postmai “On the compounds of 
