1 ClO NTE Nees 
ASYMMETRIC syNTHPSIs (On W. Marckwatp’s) of optically active valerie acid. 465. 
ATEN (A. H. W.). On the system pyridine and methyliodide. 468. 
AUTOCATALYsIs (A few observations on) and the transformation of y-hydroxy-acids, 
with and without addition of other acids, conceived as an ion-reaction. 760. 
AXES (The locus of the principal) of a pencil of quadratic surfaces. 341. 
— (The equations by which the locus of the principal) of a pencil of quadratic 
surfaces is determined. 532. 
— (The equation of order nine representing the locus of the principal) of a pencil 
of quadratic surfaces. 721. 
AZIMUTH (Determinations of latitude and) made in 1896 —99. 482. 
BAKHUIS ROOZEBOOM (H. W.) presents a paper of Prof. Eve. DuBois: “On the 
origin of the fresh-water in the subsoil of a few shallow polders”. 53. 
— presents a paper of J. J. van Laar: “On the latent heat of mixing for asso- 
ciating solvents”, 174. 
— presents a paper of Dr. A. Smits: “On the phenomena appearing when in a 
binary system the plaitpointcurve meets the solubility curve” (8rd communica- 
tion). 177. 
— presents a paper of Dr. J. J. Buanksma: “On trinitroveratrol”. 462. 
— presents a paper of Dr. S. Tymstra Bz: “On W. Marckwat.p’s asymmetric 
synthesis of optically active valerie acid”. 465. 
— presents a paper of Dr. A. H. W. Aven: “On the system pyridine and methyl 
iodide”. 468. 
— presents a paper of J. J. van Laar: “On the different forms and transformations 
of the boundary curves in the case of partial miscibility of two liquids”. 636. 
— presents a paper of Dr. F. M. Jancer: “On miscibility in the solid aggregate 
condition and isomorphy with carbon compounds”. 658. 
— and i, H. Bicuner. Critical terminating points in three-phase lines with solid 
phases in binary systems which present two liquid layers. 556, 
BAKHUIJZEN (H. G. VAN DE SANDE). v. SANDE BAKHUIJZEN (H. G. VAN DE). 
BARENDRECHT (H. P.). Enzyme-action. 2. 
BAROMETRIC HEIGHT (On a twenty-six-day period in daily means of the). 18. 
BAROSCOPE (Application of the) to the determination of the densities of gases and 
vapors. 770. 
BEMMELEN (J. M. VAN) presents a paper of Dr. H. P. Barenprecut: “Enzyme- 
action”, 2, 
— presents a communication of Prof. Evs. DuBois: “On the direction and the 
starting point of the diluvial ice motion over the Netherlands”, 40. 
— On the composition of the silicates in the soil which have been formed from 
the disintegration of the minerals in the rocks, 329. 
BENZENE SERIES (On the preservation of the crystallographical symmetry in the sub- 
stitution of position isomeric derivatives of the). 191. 
BENZENES (The nitration of disubstituted). 266. 
BENZOL (On the intramolecular oxydation of a SH-group bound to) by an orthostanding 
NOg-group. 63. 
