CONTENTS. X\l 



ROM BURG 11 (p. van) Riul J. II. SciiicPEKs. 2.0 /i.6 Tetraiutro-phenvlmethyl- and 



ethylnitramine. 369. 

 ROMBURGii (p. van) and Miss D. W. Wensink. A new hydrocarbon from the 



pinacone of methylethylketone. 1088. 



RÖNTGENPATTERNS of Boracite, obtained above and below its inversion-temperature. 792. 

 RÖTHIG (p.). Contributions upon Neurobiotaxis. 296. 



RUTGERS (j. G.). Applications of Soninb's extension of Abel's integralequation. 583. 

 RUTTEN (l.). Elephas antiquus Falc. from the river Waal near Nijmegen. 769. 

 salomonson(i. K. A wertheim) presents a paper of Dr. L, J. J. Muskens : 



"Rolling movements and the ascending vestibulary connections (Fasciculus Deiters 



Ascendens). 338. 



— Contribution to the knowledge of the string galvanometer. 522. 



— Electrocardiograms of surviving human embryos. 992. 



SALTS (The reciprocal pairs of) KCl -f- Na^i O3 ^ NaCl + KNO3 and the manufacture 

 of conversion salpeter. 1065. 



S A N D E B A K H U IJ Z E N (E. F. VAN D E). V. BaKHUIJZEN (E. F. VAN DE SaNDE). 



SCANDIUM, Indium and Beryllium (On the isomorphy of the ethylsulphates of the metals 



of the rare earths, and on the problem of eventual morphotropic relations of these 



salts with analogous salts of). 1095. 

 SCHAAK E (g.) and Hk. de Vrtes. On the singular solutions of ordinary and partial 



difl'erential equations of the first order. 1152. 

 SCHEPFER (r. E. c). On the system hexane-water. 404. 

 SCHEPERS (j. H.) and P. VAN RoMBURGH. 2.3.4.6 Tetranitro-phenylmethyl- and 



ethylnitramine. 369. 

 SCHREINEMAKERS (f. A. H.). Equilibria in ternary systems. VIII. 99. IX. 385. 



X. 540. XI. 597. XII. 739. XIII. 841. XIV. 1136. 



— presents a paper of Prof. W. Reinders : "The distribution of a colloidally 

 dissolved substance over two layers". 379. 



— presents a paper of Mr. J. C. Thonus : "Concerning combinations of aniline 

 with hydrochloric acid". 553. 



— presents a paper of Mr. 1). F. DU ToiT : "Concerning combinations of urea 

 with acids". 555. 



— presents a paper of Dr. W. P. A. Jonker: "Connexion between the adsorption- 

 isotherm and the laws of Proust and Henry". 970. 



— presents a paper of Prof. W. Reinders: '"The reciprocal pairs of salts 

 KCl + NaNOj ^ NaCl -\- KNO3 and the manufacture of conversion salpeter". 1065. 



SECRETION (Further experimental investigations of the internal) of the pancreas. 248. 



— (Investigations into the internal) of the pancreas. 2. 



SEGREGATION (The exphuiatiou of an apparent exception to Mendel's law of). 1021. 



SILICATE-CHEMISTRY (Studies in the field of). 1. On compounds of lithiumoxide and 

 silica. 857. 



s I L L E V I s (k. h. a.) and J. Böeseken. The stability of cyclohydrocarbons in con- 

 nection with their configuration. The transformation of cyclc-hexene into benzene 

 and cyclo-hexane. 499. 



