GLOONEE EEN D'S XXIII 
Worrr (L. K.). On the so-called filtrable virus of influenza described by 
Von ANGERER. 172. 
WoupDeE (W. VAN DER). On a Quartic Curve of Genus Two in which 
an Infinity of Configurations of DESARGUES can be Inscribed. 645. 
ZAHLKORPERS (Ueber die Zerlegungsgesetze für die Primideale eines belie- 
bigen algebraischen) im Körper der //-ten Kinheitswurzeln. 873. 
ZEEHUISEN (H.) and H. ZWAARDEMAKER. On the relation between the 
electrical phenomenon in cloudlike condensed odorous water vapours 
and smell-intensity. 175. 
ZEEMAN-Effect. (The Anomalous). 190. 
ZEEMAN (P.) presents a paper of Prof. A. Smits, G. L. C. La BASTIDE 
and J. A. VAN DEN ANDEL: “The Phenomenon after Anodic Polari- 
sation”. I. 82. II. 296. 
— presents a paper of Prof. A. Smits: “Metals and Non-Metals’’. 119. 
— presents a paper of Dr. P. A. vAN DER HARST: “Researches on the 
Spectra of Tin, Lead, Antimony and Bismuth in the Magnetic Field”. 300. 
— The Propagation of Light in Moving Transparent Solid Substances. I. 
Apparatus for the Observation of the F1zEau-Effectin Solid Substances. 462. 
— and Miss A. SNETHLAGE. The Propagation of Light in Moving, Trans- 
parent Solid Substances. Il. Measurements on the Frizeau-Effect in 
Quartz. 512. 
ZiNcATEs (The) of sodium. Equilibriums in the system NaxO-ZnO-H2O. 179. 
Zoology. P. N. van KAMPEN: “On the phylogeny of the hair of mammals.” 140. 
— J. F. vAN BEMMELEN: “The interrelations of the species belonging to 
the genus Saturnia, judged by the colour-pattern of their wings.” 447. 
— J. F. vaN BEMMELEN. “The wing-design of Chaerocampinae.” 738. 
— C. Pu. Stuiter. “Rhythmical Skin-growth and Skin-design in Amphibians 
and Reptiles.” 954. 
ZWAARDEMAKER (H.) presents a paper of Mr. F. Rorrs and L. Morr: 
“On the Index Loquelae”. 98. 
— On Polonium Radiation and Recovery of Function. 383. 
— presents a paper of Prof. A.J. P. vAN DEN BROEK: “About the influence 
of radio-active elements on the development”. 563. 
— and F. HoGewinp. On Spray-Electricity and Waterfall-Electricity. 429. 
— and H. Zeenuisen. On the relation between the electrical phenomenon 
in cloudlike condensed odorous water vapours and smell-intensity. 175. 
