CONTENTS. mn 
BEIJERINCK (M. W.) An experiment with Sarcina ventriculi”, 1237. 
BINARY MIXTURES (Isotherms of monatomic gases and their). IV. Remarks on the 
separation of argon. V. Vapour pressures above —140° ©. 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. IX. The behaviour of argon with regard 
to the law of corresponding states. 1012. 
BINARY SYSTEM (On the continuous connection between the thrcephase lines which 
indicate the equilibria between the two components in the solid condition with 
liquid and vapour, respectively in a). 158. 
BINARY SYSTEMS (The equilibrium solid-liquid-gas in) which present mixed erystals. 
2nd communication. 206. 
— (On vapour-pressures in) with partial miscibility of the liquids. $65. Adden- 
dum. 957. 
BLastocyst (The Eutherian and the Matherian early). 1077. 
BLOOD-CORPUSCLES (The permeability of red) in physiological conditions, especially 
to alkali- and earth-alkali metals. 258. 489. 927. 
BLOOD-PRESSURE (A new method of determining the arterial) in man; at the same 
time an attempt at estimating the influence of the arterial wali on it. 1181. 
BOEKE (3) and K, W. Dammerman. The saccus vasculosus of fishes a receptive 
nervous organ and not a gland. 186. 
BOEREMA (J.) and H. Haca. The electromotive force of the Weston normal cell. 587. 
BOESEKEN (J.) and H. J. Prins. The synthesis of as. heptachloropropane from tetra- 
chloro-ethylene and chloroform with the co-operation of aluminium chloride. 685. 
BOESEKEN (J.) and A. Scnweizer. The velocity of the ring opening in connection 
with the composition of the unsaturated ring systems. 534. 
BOIS (H. E. J. G. DU) An improved semicircular electromagnet. II. 386. 
— presents a paper of Dr. G. J. Erras: “On the ZEEMAN-eflect for emissionlines 
in a direction oblique with regard to the lines of force”. 391. 
BOLK (L.) presents a paper of Dr. C. T. van VALKENBURG: “Nucleus facialis dorsalis, 
nucleus trigeminis posterior, nucleus trochlearis posterior’. 143, 
— On the development of the Hypophysis of primates especially of Tarsius. 660. 
— presents a paper of Dr. W. G. Huet: “Notes on the trochlear and oculomotor 
nuclei and the trochlear root in the lower vertebrates.” 897. 
— presents a paper of Dr. J. J. L. D. BARON van HoEveELL: “Remarks on the 
reticular cells of the oblongata in different vertebrates’. 1047. 
BONNEMA (3. H.) Diluvial boulders from the island of Borkum. 137. 
BOOLE sTOTT (Mrs. a.) and P. H. Scrourr. Reciprocity in connexion with 
semiregular polytopes and nets. 384. 
BORKUM (Diluvial boulders from the island of). 137. 
Botany. C. van WrisserineH: “On the structure of the nucleus and karyokinesis in 
Closterium Ehrenbergii Men”. 365. 
— A. A. L. Ruresrs: ‘The influence of temperature on the presentation time in 
geotropism’’. 476, 
84* 
