BIN aah 
ACETONE (On the system: water- phenol-). 1. 
— and ether (The determination of the refractivity as a method for the investi- 
gation of the composition of co-existing phases in mixtures of), 101. 
ALBERDA VAN EKESTEIN (w.) and C. A. LoBry pe Bruyn. „On d sorbinose 
and l-sorbinose (-tagatose) and their configurations”. 268, 
AMBRIZ (Determination of the latitude of) and of San Salvador (Portuguese West- 
Africa). 398. 
Anatomy. J. W. van Wine: vA simple and rapid method for preparing neutral 
Pikrocarmine”. 409. 
ANOMALOUS DISPERSION of light (Solar phenomena, considered in connection with). 
467. 575. 
Anthropology. P. H. Exskman: vA new graphic system of Craniology” (communicated 
by Prof. ©. W1NKLER). 327. 
APEX of the solar motion (The determination of the). 353. 
— of the solar motion in space (On the systematic corrections of the proper mo- 
tions of the stars, contained in AUWERsS-BRADLEY-Catalogue, and the coordinates 
of the). 262. 
APPARATUS (Methods and) used in the Cryogenic Laboratory, I. 129. IL. 406. 437. 
APPROXIMATION FORMULAE concerning the prime numbers not exceeding a given 
limit. 599. 
AROMATIC NITRO-COMPOUNDS (On the action of sodium mono- and -disulphides on). 271. 
ASCITES LIQUID of man (Lipolytic ferment in). 406, 428. 
Astronomy. HI. J. Zwieus: „The system of Sirius according to the latest observations” 
(communicated by Prof. H. G. van DE SANDE BAKHUYZEN). 6. 
— H. G. van DE SANDE BAKHUYZEN: »On the finding back of the comet of Hor- 
MES according to the computations of H. J. Zwrers.” 69. 
— 8. L. Vernstra: »On the systematic corrections of the proper motions of the 
stars, contained in Auwers’ DBRADLEY-Catalogue, and the coordinates of the 
Apex of the solar motion in space” (communicated by Prof. J.C. Kapreyn), 262. 
— J. C. Kapreyn: The determination of the Apex of the solar motion,” 353. 
— CU. SANDERS: „Determination of the latitude of Ambriz and of San Salvador 
47 
Proceedings Royal Acad, Amsterdam. Vel. LI. 
