II CiOEN TEENS 
ARGON (Coexisting liquid and vapour densities of). 607. 
— (Calculation of the critical density cf). 607. 
— (Isotherms of) between + 20° C. and —- 150° C. 614. 
— (The behaviour of) with regard to the law of corresponding states. 1012. 
ARISZ (w. H.) On the connection between stimulus and effect in phototropic curvatures 
of seedlings of Avena sativa. 1022. 
ARTERIAL WALL (An attempt at estimating the). 1181. 
AS. HEPTACHLOROPROPANE (The synthesis of) from tetrachloro-ethylene and chloroform 
with the co-operation of aluminium-chloride, 685. 
Astronomy. A. PANNEKOEK: “Researches into the structure of the galaxy”. 239. 
AVENA SATIVA (On the connection between stimulus and effect in phototropie curva- 
tures of seedlings of). 1022. 
AXIAL-ANGLE (On the determination of the optic) from the extinction-angle with regard 
to the trace of a discretional plane in a diseretional erystal-section. 1035. 
BACTERIA (Fat-splitting by). 667. 
BACTERIAL ACTION (Pigments as products of oxidation by). 10€6, 
Bacteriology. J. H. F. KonrsBrueer: “Acetifying air- and ricebacteria the cause of 
Polyneuritis gallinarum”. 904, 
BAKHUYZEN (B. F. VAN DE SANDE) presents a paper of Dr. A, PANNEKOEK: ‘Researches 
into the structure of the galaxy”. 239. 
BALIK PAPAN BAY (East Coast of Borneo) (On Orbitoides in the neighbourhood 
of the). 1122. 
BARENNE (J. G DUSSER DE) v. DUssSER DE BARENNE (J. G.) 
BATAVIA (On the semi-diurnal lunar tide as deduced from records of the astatic seis— 
mograph at). 17. 
— (Preliminary report upon the investigation of the upper air-layers begun at) in 
1909. 149. 
BEMMELEN (W. VAN) and C, Braak. Preliminary report upon the investigation 
of the upper air-layers begun at Batavia in 1909. 149. 
BERESTEYN (M. H. VAN). On the application of Darwin’s method to some com- 
pound tides. 530. 
BERGANSIUS (F. L.). A new accurate formula for the computation of the self- 
inductance of a long coil wound with any number of layers. 917. 
BETH (H. 3. E.) The oscillations about a position of equilibrium where a simple 
linear relation exists between the frequencies of the vibrations. 742. 
BEIJERINCK (M. w.) presents a paper of Miss J. van AMSTEL and G. van ITER- 
SON JR.: “The temperature optimum of physiological processes”. 227. 
— presenis a paper of Prof. A, W. Nreuwenuuis: “Individuality and heredity in 
a lower mould fungus Trichophyton albiscicans.” 550. 
— presents a paper of Prof. A. W. Nreuwenuuirs: “Method to cultivate micro- 
organisms from one cell”. 566. 
— presents a paper of Dr. N. L. SöHNGEN: “Fat-splitting by bacteria.” 667. 
— Pigmen's as products of oxidation by bacterial action. 1066. 
— presents a paper of Dr. N. L. SöHNGEN: “Lipase produced by microbes”. 1200. 
