Vii CoO NDS NTS: 
EXTINCTION-ANGLE (On the determination of the optic axial angle from the) with 
regard to the trace of a discretional plane in discretional erystal-section. 1035. 
FAT SPLITTING by bacteria. 667. 
rises (The saccus vasculosus of) a receptive nervous organ and not a gland. 186. 
— (A new case of parental care among). 583. 
FLORA of Tegelen (A further investigation on the pliocene). 192. 
FLUOROBENZENES (On the three isomeric) and some of their derivatives. 718. 
FRANCHIMONT(a. P. N.). On nitrogen (or nitrilo) — trimethylnitraminomethylene. 527. 
— and J. v. Dugsky. On the reaction products of potassium isocyanate and diami- 
noacetone hydrochloride. Amino- and ureopropylene-uréine.” 625. 
FREDHOLM (On the integral equation of). 734. 
FUNCTIONS (Infinitesimal iteration of reciprocal). 21, 2nd part 202, 
FuNGus Trichophyton albiscicans ({ndividuality and heredity in a lower mould). 550. 
GALL\xy (Researches into the structure of the). 239. 
Gas (Determination of the pressure of a) by means of G1BBS’ statistical mechanics. 135. 
— (Selective absorption and anomalous scattering of light in extensive masses of). 881. 
Gases (About exchange of) in cold blooded animals in connection with their size. 48. 
— (lsotherms of monatomic) and their binary mixtures. IV. Remarks on the 
separation of argon. V. Vapour pressures above —140°C, critical temperature 
and critical pressure of argon. 54. VI, Coexisting liquid and vapour densities of 
argon ; calculation of the critical density of argon. 607, VIL. Isotherms of argon 
between + 20° C. and —150° C, 614. 
— (Observations concerning anomalous dispersion of light in). 1st Communication. 
1088. 
— (lonization of) by light emitted from GetssLEer tubes. 1114. 
GEISSLER TUBES (Lonization of gases by light emitted from). 1114. 
Geology. J. H. Bonnema: “Diluvial boulders from the island of Borkum”. 137. 
— L. Rurren: “On Orbitvides in the neighbourhood of the Balik Papan bay (East- 
coast of Borneo)”. 1122. 
Geophysics. C. Braak. “On the determination of the epicentre of earth-quakes by 
means of records at a single station”. 11. 
— C. Braak: “On the semi-diurnal lunar tide as deduced from records of the 
astatic seismograph at Batavia’. 17. 
— A. WrcHMANN: “On the voleanic eruption in the island of Téon (Tijau) in 
1659.” 485. 
— M. H. van BERESTEYN: “On the application of Darwin’s method to some 
compound tides’. 530. 
— C. Braak: “On tidal forces as determined by means of WIECHER’s astatic 
seismograph”’. 1231. 
GEorroptsM (The influence of temperature on the presentation time in). 476. 
GIBBS’ statistical mechanics (Determination of the pressure of a gas by means of). 135, 
GODEAUX (LUCIEN). On a system of conics in space. 762. 
GRYNS (G.). The permeability of red bloodcorpuscles in physiological conditions, 
especially to ulkali- and earth alkali-metals. 489. 
