XXIV CG WO UN TENTS 
ONNES (H. KAMERLING H)presents a paper of Messrs N. H. KOLKMEYER, 
J. M. Bisvoer and A. KARSSEN: “Investigation by means of x-rays of 
the crystalstructure of sodium-chlorate and sodium-bromate.” 644. 
— presents a paper of Messrs G. Horsr and E. OosrerHuis: “The so- 
called cyanogen-bands.” 727. 
— presents a paper of Prof. W. H. Kreesom: “The quadrupole moments 
of the oxygen and nitrogen molecules.” 939. 
— presents a paper of Prof. W. H. Kegsom: “The cohesion forces in 
the theory of VAN DER WAALs.” 943. 
— presents a paper of Prof. W. H. Keresom: “On the deviations of 
liquid oxygen from the law of Curt.” 1127. 
— E. Marnuias and ©. A. CROMMELIN. The rectilinear diameter of hy- 
drogen. 1175. 
— and C. A. CROMMELIN. Methods and apparatus used in the cryogenic 
laboratory. XVIII. Improved form of a hydrogen vapour cryostat for 
temperatures between —217° C. and —253° C. 1185. 
— presents a papers of Dr. N. H. KoLkmeyer: “Space-time symmetry. 
I. General considerations.” 1419. II. Discussion of a special case. The 
tetrahedrical atom-models of LANDÉ. 1428. II]. Remarks on the deduc- 
tion of groups of space-time symmetry-operations. 1434. 
OorptT (G. J. vAN) and J. E. W. Inve. On the larval development of 
oxyuris equi (Schrank). 603. 
OosTERHUIS (E.) and G. Horst. The so-called cyanogen-bands. 727. 
OSMOTIC PRESSURE (The) regarded as a capillary phenomenon. 184. 
OTOLITHES (The function of the) 907. 
Ovary (On a human) with a large number of abnormal follicles and the 
genetic significance of this deviation. 448. 
OXYGEN and nitrogen molecules (The quadrupole moments of the). 939. 
— (On the deviations of liquid) from the law of Curie. 1127. 
Oxyuris EQui (Schrank) (On the larval development of). 603. 
Palaeontology. L. RUTTEN: “On the occurrence of Halimeda in old-miocene 
coastreefs of East-Borneo.” 506. 
— Miss J. E. van VEEN: “The identity of the genera Poloniella and 
Kloedenella.” 993. 
— Eve. Dusots: “The proto-Australian fossil-man of Wadjak, Java.” 1013. 
— Eus. Dusois: “On the significance of the large cranial capacity of 
homo neandertalensis.” 1271. 
PANNEKOEK (A). The distance of the dark Nebulae in Taurus. 707. 
Further remarks. 720. 
PARAMAGNETISM (Note on the) of solids. 989. 
PARA-TOLUENESULPHONIC acid (On the crystalforms of some substituted 
amides of). 347. 
