houeman (a. f.J presents a paper of Piof. A. Smits and Dr. J. P. Wuite: “On 
the system water-natrium sulphate”. 244. 
— presents a paper of Dr. F. E. C. Scheffer: “On heterogeneous equilibria of 
dissociating compounds”. 257. 
— presents a paper of Prof. J. RoSsekek: “Contribution to the knowledge of 
catalytic phenomena”. 417. 
— presents a paper of Prof. A. Smits: “A new theory of the phenomenon allotropy”. 763. 
H o o g e n H u y z g (c. J. c.' van). About the formation of creatine in the muscles at 
the tonus and at the development of rigidity. 550. 
INDIAN archipelago (The fens of the). 70. 
— (On fen formations in the East-). 74. 
indole (On a synthesis of aldehydes and). 42. 
intensity of stimulus (Investigations on the relation between the presentation time 
and) in geotropic curvatures. 65. 
isotherms of monatomic gases and their binary mixtures. III. Data concerning neon 
and helium. 175. 
ITERATION (Investigation of the functions which can be built up by means of infini¬ 
tesimal). 20S. 427. 
— (On the orbits of a function obtained by infinitesimal) in its complex plane. 503. 
jaeger (f. m.). Studies on Tellurium. I. The mutual behaviour of the elements: 
sulphur and tellurium. 602. 
java (Contribution to the knowledge of the flora of). V. 108. VI. 116. 
julius (w. H.). Regular consequences of irregular refraction in the sun. 266. 
— On the origin of the chromospheric light”. 446. 
kamerlingh onnes (h.). Isotherms of monatomic gases and their binary mix¬ 
tures. III. Data concerning neon and helium. 175. 
— presents a paper of Prof. Ernst Cohen and J. Olie Jb.: “The atomic volume 
of allotropic modifications at very low temperatures”. 437. 
— presents a paper of Mr. J. W. Giltay and Prof. M. be Haas: “On the motion of 
the bridge of the violin”. 513. 
merlingh onnes (h.) and Hekri and Jean Bkcquerel. On phosphorescence 
at very low temperatures. 76. 
merlingh onnes (h.), P. Lenard and W. E. Pauli. The behaviour of the 
phosphorescent sulfides of the alkaline earths at various low temperatures. 157. 
merlingh onnes (h ). and Albert Perrier. Researches on the magneti¬ 
zation of liquid and solid oxygen. 799. 
merlingh onnes (h.) and Pierre Weiss. Researches on magnetization at 
very low temperatures. 649. 
p T e Y N (w.). presents a paper of Dr. M. J. van Uven: “Investigation of the functions 
which can be built np by means of infiuitesimal iteration. Contribution to the 
solution of the functional equation of Abel”.. 208. 
- presents a paper of Dr. M. J. van Uven: “Investigation of the functions which 
cau be built up by means of infinitesimal iteration”. 427. 
