CONTENTS IX 



II O L L E M A N (A. F.) presents a paper of Dr. A. H. W. Aten: "A third kind of sulphur 



molecule". 82+. 

 HOLST (g.) and L. Hamburger. On a method of determining^ spectral intenaities 



by means of photourraphy. 1021. 



— and A. N. Koopmans. On the sparking-potential of argon-nitrogen mixtures. 

 1025. 



— and J. ScHARP UE Visser. The brightness of the black body and the mechanical 

 et|uivalent of light". 1036. 



HOOGENHOYZE (c. J. c. VAN). Researches to the etiology of Febris exanthe- 

 maticus. 465. 



H o o G E \v E R F r (s.) presents a paper of Dr. J. P. Treub: "On the saponification 

 of fats", r. 3.5. II. 343. 



— presents a paper of Prof. A. Smits, G. Meyer and R. Th. Beck: "On black 

 phosphorus". II. 392. 



— presents a paper of Prof. A. Smits and Dr. C. A. Lobrv de Bruyn : "On the 

 electro chemical behaviour of nickel". 394. 



— presents a ])aper of Prof. A. Smits and I)r. J. Gillis-. "On milk-sugar". I. 

 520. II. 573. 



UORSÏ (c. J. VAN DER) The fore-brain of Synbranchidae. 217. 



HYDEATiON (Observations about) under the influence of colloidal catalysers, and how 



to account for this process. 424. 

 HYDRiNDENE-1. 2. diols (On the). 1186. 

 HYÜROCHLORIC ACID (Influence of ditterent compounds on the destruction of mono- 



saccharids by Sodiurahydroxyde and on the inversion of Sucrose by). 88. II. 



882. III. 581. 

 HYDROGEN (On the course of the values a and h for) at different temperatures and 



volumes. 750. 



— (The viscosity of liquid). 986. 



— (Measurements of the specific heat of fusion of). 1000. 

 HYÜROXYBENZ01C ACIDS (Constitutiou-formula of the) and of sulfanilic acid. 581. 

 HYPERELLiPTlc integrals (On) of deficiency ;? = 2, reducible by a transformation of 



order /• = 4. 330. 

 INTESTINE (On the etiect of H2O2 on the peristalsis of the isolated). 861. 

 INTESTINE EXTRACTS (On the nature of the constituent of) which exerts a stimulating 



influence upon the Gastro-intestinal movements. 805. 

 isoTHERMALs of di-atomic substances and their binary mixtures. XIX. 178. 



— of moiiatomic substances and their binary mixtures. XIX. 1160. 



JAEGER (f. m.). Investigations into Pasteur's principle of the connection between 

 molecular and crystallonomical dissymmetry HI Racemic and optically active 

 complex salts of trivalent rhodium. 244. IV. Racemic and optically active complex 

 salts of rhodiura-tri-oxalic acid. 263. 



— Two cr\stallised, isomeric r/-fructose-penta-acet.ites. 280. 



