C o N T E N 'f Ö. \V 



MONTHLY PERIOD (Investigation of the ine([Uiilities of approximalely) in the longitude 



of the moon, according to the meridian observations at Greenwich. 124. Part 2, 



Ul. Addendum. 890. 

 MOON, (On the significance of the term in tlie right ascension of the) found by 



.1. E. UE Vos VAN Steenwijk. 144. 

 MOTOR ROOTS and nuclei (The arrangement of tlio) in the brain of Acipenser ruthenus 



and Lepidosteus osseus. 1032. 

 MULLER (p.). On the formation of an aldehyde from s. divinylglycol. Sofi. 



— and P. VAN KoMBURGii. On 1.3.5 hexatriene, 109U, 

 MUSCLE (Experiments on the atonical). 336. II. 571. 



M us KENS (l. J. J.). "Rolling movements, and the iisconding vestibulary connec- 

 tions". 338. 



NERVE (Note on the size of the dorsal motor nucleus of the Xtli) in regard to the 

 development of the stomach. 305. 



NERVOUS SYSTEM (On the relation between the quantify of white and grey substance 

 in the central) 311. 



— (On the reilectorical influence of the thoracal autonoraical) on the rigor mortis 

 in cold-blooded animals. 952. 



NEUROBiOTAXis (Contributions upon) 296. 



NIEUWENHUYSE (j.) and C. J. C. HooGENHUYZK. Influence of alcohol upon the 



respiratory exchange during rest and during muscular exercise. 164. 

 NITRATE FERMENT (The) and the formation of physiological species. 1211. 

 NITRATION (The) of toluols and its derivatives chlorated in the side-chain. 192. 



— (On the) of methylurea. 770. 



NUCLEI (The arrangement of the motor roots and) in the brain of Acipenser ruihenus 



and Lepidosteus osseus). 1032. 

 NUCLEOLUS (On the) and karyokinesis in Zygnema. 11. 

 NUCLEUS (Note on the size of the dorsal motor) of the Xth nerve in regard to the 



development of the stomach. 305. 

 OAT-SEEDLlNQS (Avena saliva) (Positive and negative phototropy of the apex and 



base in). 363. 

 OATS (Adjustment to light in). 61 B. 

 ONNES (h. k a me r l I n g ii). Further experiments witli liquid helium. H. 113. 



673. I. 987. 



— presents a paper of Dr. W. H. Keesom : "On the equation of state of an ideal 

 monatomic gas according to the quantum theory". 227. 



— presents a paper of Ur. W. H. Keesom : "On the theory of free electrons in 

 metals". 236. 



— presents a paper of Mr. E. Oosteriiuis : "Magnetic researches. IX. The devia- 

 tions from Curie's law in connection with the zero-point energy". 432. 



— presents a paper of Mr. Sopiius Weber: "Vapour pressures at very low reduced 

 temperatures. II. The vapour pressure of carbon dioxide in the range from — 140° C. 

 to about 160° C." 415. 



— presents a paper of Dr. VV. 11. Krf.som : "On the magnetization of ferromagnefic 

 substances considered in connection with the assumption of a zero-point energy". 

 454. II. 468. 



