XTIll " CONTENTS 



SALOMONSON (l. K. A. webtheim) presents a paper of Dr. N, Vooehoeve : 

 "A hypothesis concerning the mutual relation between some hereditary abnormalities 

 that occurr combined". 194. 



— Photography of the fundus of the human eye. 326. 

 SALTS (The influence of neutral) on the action of Urease. 559. 



8 A N Ü E B A K H Ü Y Z E N (E. f. VAN Ü E). V. BaKUÜYZEN (E. F. VAN DE SaNDE). 



SAPONIFICATION (On the) of fats. I. 35. II. 343. 



3ABOS (The origin of the). 943. 



SATELLITE-POINTS (Ou) on curves, given by Ihe equations: x := atp , y :=3. htq . 1054. 



SCHAR 1' DE VISSER (j.). V. \'lSSER (J. SCHARP DE). 



SCHOORL (n.) and Miss A. Regenbogen. Revision of the tables for the Strength 



of Spirit. 831. 

 SCHOUTEN (w. J. A.). On the parallax of some stellar clusters. 1st. Coram. 1108. 

 sc H REi N E M A K E Rs (F. A. H.). In-, mouo- and divariiint equilibria. XVIII. 659. 



SIEWERTSZ VAN REE3EMA (N. H.). V. ReESEMA (N. H. SlEWERTSZ VAN). 



SITTER (w. d e). On the curvature of space. 229. 



— presents a paper of Dr. A. Pannekoek: "The origin of the Saros". 943. 



— Outlines of a new theory of Jupiter's satellites. 1289. 1300. 



— Further remarks on the solutions of the tield-equations of Einstkin's theory of 

 gravitation. 1309. 



SKELETON-MUSCLES (Are Contractility and conductivity two separate properties of the) 



and the heart? 554. 

 SMITS (a.) and J. Gillis. On milk sugar. I. 52U. II. .")73. 



— and C. A. Lobry de Bruyn. On the electrochemical behaviour of nickel. 

 394. 



— G. Meyer and R. Th. Beck. On black phosporus. LI. 392. 

 soDiLMHYDROxiDE (Influence of difterent compounds on the destruction of monosaccharids 



by) and on the inversion of sucrose by hydrochloric acid. 88. 11. 383. III. 581. 

 SOLAR LIGHT (Actiou of) OU cumarjn. 875. 



sparking-potential (On the) of argon-nitiogen mixtures. 1025. 

 SPECIFIC HEAT (The) at low temperatures IV. Measurements of the specitic heat of 



liquid hydrogen. 1000. 

 SPECTRAL intensities (On a method of determining) by means of photography. 1021 

 SPECTRUM (Tlie) of a rotating molecule according to the theory of quanta. 170. 

 SPIRIT (Revision of the tables for the strength of). 831. 



SPLEEN (On the behaviour of megakaryocytes in the) of the young kitten. 971. 

 SPONGILLTDAE (A Contribution to the physiology of the fresh-water Sponges). 1061. 

 STARS (Investigation concerning the precession-constant and the systematic proper 



motions of the). 956. 

 STELLAR CLUSTERS (Ou the parallax of some. 1st Comm. 1108. 

 STIMUL.\. (Ou the transmission of) through the ventricle of frogs* hearts. 404. 

 STIMULATION (On the behaviour of the Uranium-heart towards electric] as investigated 



by Dr. M. den Boer. 189. 



