CONTENTS: VII 
FAR (On the relative sensitiveness cf the human) for tones of different pitch, measured 
by means of organ pipes. 549. 
EASTON (c.). On the apparent distribution of the nebulae. 117. 
— The nebulae considered in relation to the galactic system. 125. 
— Oscillations of the solar activity and the climate. 368, 
EINTHOVEN (w.). On a new method of damping oscillatory deflections of a gal- 
vanometer, 315. 
ELECTRON (Simplified deduction of the field and the forces of an), moving in any 
given way. 346. 
ELECTRONS (The motion of) in metallic bodies. I. 438. II. 585. III. 684. 
ELLIPTIC ORBIT (Approximate formulae of a high degree of accuracy for the relations 
of the triangles in the determination of an) from three observations. 752. 
ENERGY (On artificial and natural nerve-stimulation and the quantity of) involved, 147. 
ENZYME-ACTION. 2, 
EQUATION (On the) determining the angles of two polydimensional spaces. 340, 
— of order nine (The) representing the locus of the principal axes of a pencil of 
quadratic surfaces. 721, 
Equations (The) by which the locus of the principal axes of a pencil of quadratic 
surfaces is determined, 532. 
ERRATUM. 329, 485. 633. 
ETHYLETHER (On Px-curves of mixtures of acetone and) and of carbontetrachloride 
and acetone at 0°C. 162. 
EUCARVON (The inversion of carvon and) in carvaerol and its velocity. 63, 
EXPANSION COEFFICIENT (The) of Jena- and Thiiringer glass between + 16° and 
—182°C, 674. 
FERMENTATION SARCINA (An obligative anaerobic), 580. 
FIBRINGLOBULIN (On the presence of) in fibrinogen solutions. 610. 
FISHES (On the osmotic pressure of the blood and urine of). 537. 
FLOCCULUS CEREBELLI (Degenerations in the central nervous system after removal of 
the). 282. 
FORMULA (The derivation of the) which gives the relation between the concentration 
of coexisting phases for binary mixtures. 156, 
FORMULAE of GULDIN (The) in polydimensional space. 487. 
FRANCHIMONT (a. P, N.) presents a paper of Dr. I’. M, Jancer: “On Benzyl- 
phtalimide and Benzylphtal-iso-imide”. 77. 
— presents a paper of Dr. F. M. Jaraer: “On the preservation of the erystallo= 
graphical symmetry in the substitution of position isomeric derivatives of the 
benzene series”, 191, 
— presents a paper of P. J. Montagne: “On intramolecular atomic rearrangements 
in benzpinacones”, 271. 
— presents the dissertation of Dr. J. Moun van CHARANTE: “Sulphoisobutyric 
acid and some of its derivatives”. 275. 
— and H. FrIEDMANN. On gz'-tetramethylpiperidine. 270. 
PRIEDEL and Crarts (The reaction of). 470, 
