XX 



CONTENTS. 



puessurf: (The intlueiit-e of) on the EMF of ll>e leiul-acciuiiulator. Ifil. 

 PSEUDO-COMPONENTS (The iiielastable contituiation of the mixed crystal series of) in 



connection with the pbenomenon of aliotropy). 11(57. 

 PSEUDOMETEORiTE of Igast In Livonia (On the). 292. 

 PSEUÜOSYSTEM (On the) methylrhodanide-methylmustard oil. 33. 

 PTERic SUTURES (Oil) and pterio bones in the buinaii skull. ()34-, 

 PYKOPIIORIC PHENOMENON (On the) in metals. 999. 

 QUANTUM THEORY (On the equation of state of an ideal .monatomic gas according to 



the). 227. 

 QUARTlcs (A bilinear congruence of twisted) of the tirst species. 733. 



— (A bilinear congruence of rational twisted). 1180. 



QUININE (On the presence of) in the seed of Cinchona Ledgeriana Moens. 153. 

 RAUiATioN-pyroraeters (On temperature-measurements of anisotropous bodies by means 



of). 799. 

 rayleigh's mode of arrangement (On hearing-apparatus examined after Lord). 492. 

 KEiNDERs (w.). The distribution of a coUoidally dissolved substance over two 



layers. 379. 



— The reciprocal pairs of salts KCl + NaNOa ^ NaCl + KNO3 and the manufac- 

 ture of conversion salpeter. 1065. 



HEINFOUCEMENT OP SOUND (Oil) aiid souudselectiou by means of microtelephone- 



apparatus. 19+. 

 REPRESENTATIVE POINT (The envelope of the osculating ellipses which are described 



by the) of a vibrating mechanism having two degrees of freedom of nearly equal 



freciuencies. 938. 

 RESPIRATORY EXCHANGE (Influence of alcohol upon the) during rest and during mus- 

 cular exercise. Ifi^. 

 EHiPSALis CAssYTHA (On the regulation of the transpiration of Viscura album and) 



1008. 

 lUGOR MORTIS (On the reflectorical influence of the thoracal autonomical nervous system 



on the) in cold-blooded animals. 952. 

 ROCKS (On horaoeogeneous inclusions of Kawah Idjen, Goentoer and Krakatau and their 



connection with the surrounding eruptive). 995. 

 ROLLING MOVEMi'NTs and the ascending vestibulary connections (Fasciculus Deiters 



Ascendeus). 338. 

 ROM BURGH (p. V A n) presents a paper of Dr. P. Muller : "On the formation ot 



an aldehyde from s. divinylglycol". 336. 



— presents a paper of Prof. F. M. Jaeger : "On the isoraorphy 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 Scandium, Indium and Beryllium." 

 1095. 



— presents a paper of Prof. Dr. F. M. Jaeger and Dr. H. S. van Kloo.ster: 

 "Studies in the field of silicate-chemistry : I. On compounds of lithiumoxide and 

 silica". 857. 



romburgh (p. van) and P. Muller. On 1.3.5 hexatriene. 1090. 



