XXII 



CONTENTS. 



s I M E K (ant.) and IP. M. Jaeger. On temperature-measiireraents of anisolropous 



bodies by means of radiation-pyrometers. 799. 

 SITTER (w. I) e). On canonical elements. 279. 



— On the constancy of the velocity of light. 395. 

 SMITS (a.). The systems phosphorus and cyane. 27. 



— The passivity of metals in the light of the theory of allotropy. 191. 



— The application of the theory of allotropy to electromotive equilibria. 699. 



— Answer to Prof. £. Cohen to his observations under the title "Allotropy and 

 electromotive equilibrium". 1002. 



— The metaslable continuation of the mixed crystal series of pseudo components 

 in connection with the phenomenon of allotropy. 1167. 



— S. C. BoKHORST and J. VV. Terwen. On the vapour pressure lines of the system 

 phosphorus. I. 1174. 



— A. Kettner and A. L. W. de Gee. On the pyrophoric phenomenon in metals. 999. 



— and C. A. I.obry de Bruyn. The occurrence of an upper critical point ot 

 mixing at the coexistence of two mixed crystal phases. B57. 



— and H. Vixseboxse: "On the pseudosystem methylrhodanide-methyl-mustard- 



oil". 33. 

 snapper (i.) On the change in the permeability of the red bloodcorpuscles (also 



in man). 19. 

 SOLID state (On the point in which the) disappears as an answer to the question in 



how far this point can be compared to the critical point of a liquid. The easiest 



way to do this is by means of the "^^-curve. 39. 

 s o N 1 N E 's extension (Applications of) of Abel's integralequation. 583. 

 soundselection (On reinforcement of sound and) by means of microtelephone-appa- 



ratus. 194. 

 spectrum LINES (Magnetic resolution of) and temperature. 158. 

 STABILITY (The) of cyclohydrocarbons in connection with their configuration. The 



transformation of cyclo-hexene into benzene and cyclo-hexane. 499. 

 STOK (j. P. VAN der). On the relation between the cloudiness of the sky and the 



duration of sunshine). 507. 

 STOMACH (Note on the size of the dorsal motor nucleus of the Xth nerve in regard 



to the development of the). 305. 

 SUBSTANCE (On the relation between the quantity of white and grey) in the central 



nervous system. 311. 



— (The distribution of a colloidally dissolved) over two layers. 379. 

 SUBSTANCES (Isothermals of di-atomic) and their binary mixtures. XIII. Liquid- densities 



of hydrogen between the boiling point and the triple point; contraction of hydrogen 



on freezing. 245. 



— (Viipour pressures of) of low critical temperature at low reduced temperatures. 

 I. Vapour pressures of carbon dioxide between — 160° C. and — 183° C. 215. 



— (On the magnetization of ferro-magnetic) considered in connection with the 

 assumption of a zero-point energy. 454. II. 468. 



— (Isothermals of monatomic) and their binary mixtures. XV. The vapour pressure 

 of solid and liquid argon from the critical point down to — 206° C, 477. 



