CONTENTS YII 



Einstein's theory of gravitation (On). HI. 2. IV. 20. 



— Further remarks on the solutions of the tield-equations of). 1309. 

 ELECTRIC NEBULAE (On the) of Antipvretica. 1272. 



electrometer (A new) specially arranged for radioactive investigations. Part 11.684. 



EQUATION OF STATE (The) of an associating substance. .365. 



EQUATIONS DIFFÉRENT! el LES (Sur les) du chump gfavitique. 97. 



EQUILIBRIA (In-, mono- and divariant). XVIII. 659. 



EUROPE (Periodicity of Winter temperatures in Western) since A.U. 760. 1092. 



EYE (Photography of the fundus of the human). 326. 



EVE-REFLEiES (Concerning vestibular). I. On the origin of Caloric Nystagmus. 622. 



E Y KM AN (c.) presents a paper of Dr. C. J. C. van Hoogenhuyze: "Researches 



relating to the etiology of Eebris exanthematicus." 465. 

 fats (On the saponification of). I. 35. II. 343. 



PEBRI3 exanthematicus (Researches relating to the etiology of). 465. 

 FERRi-MALONic-ACiD (On complex salts of). 283. 

 field-equations (Further remarks on the solutions of the) of Einstein's theory of 



gravitation. 1309. 

 FLUORESCEIN (Contribution regarding the shifting of radio-active Equilibria under 



the influence of). 768. 

 F o L M E R (miss h. J.). A new electrometer, specially arranged for radio-active 



investigations Part. IL. 684. 



— and A. H. Blaauw. Researches on the radio-activity of the lake of Eockanje. 

 714. 



FORE-BRA in ('I'he) of Synbranchidae. 217. 



FOSSILS from Celebes (On some) believed to belong to the Oligocene. 793. 



FRETS (g. p.). Mendelian segregation in the heredity of headform in man. 



435. 865. 

 FROG (On the respiratory movements of the). 1234. 

 frogs' gastrocnemius (On the refractory stage of the). 1214. 



— HEART (On the ventricle-electrogram of the). 696. 



— HEARTS (On the transmission of stimula through the ventricle of). 404. 

 fundamental laws of physics (In what way does it become manifest in the) that 



space has three dimensions ? 200. 

 FUS.\.RiUM (Amygdalin as nutriment for). 185. 

 gases (The viscosity of liquefied). X. 986. 



— (On the light emission of) and mixtures of gases by electric discharges. 1043. 

 gastro intestinal movements (On the nature of the constituent of Intestine-Extracts, 



which exerts a stimulating influence upon the). 805. 

 gastrocnemius (On the refractory stage of the frog's). 1214. 

 Geology. L. Rutten: "Old Andesites" and "Brecciated Miocene." 597. 



— K. Martin: "On some fossils from Celebes, believed to belong to tlie Oligocene." 

 793. 



— K. Martin : "On the miocene fauna of the West-Progo Mountains in Java." SOO. 



— L. Rutten: "On the rate of denudation in Java"'. 838. 



