La phylogénése spécifique d'un groupe de diatomées — Campylodiscoideæ — et sa cause A. Jurilj OriginalPaper Pages: 1 - 15
On the Thecamoeban fauna of New Zealand with description of four new species and biogeografical discussion P. van Oye ReviewPaper Pages: 16 - 37
A survey of the green algae epiphytic on the shells of some freshwater molluscs Mary Campion OriginalPaper Pages: 38 - 53
The oxygen consumption of Artemia salina (L.) in different salinities Barbara M. Gilchrist OriginalPaper Pages: 54 - 65
Unperiodische änderungen im stoff haushalt von seewasseraquarien H. KühlH. Mann OriginalPaper Pages: 66 - 78
Über die wassermilben (hydrachnellae) der hohen tatra (=Vysoké Tatry) L. Szalay OriginalPaper Pages: 155 - 180
Another rediscovery of commensal vorticella upon conochilus in Czechoslovakia Věra Moravcová - Hassdenteufelová OriginalPaper Pages: 181 - 183
