CONTENTS. XV 



PAGE 



Sponje Spicules (1 fig.) ^O- 2 1^7 



Spomiwola fishdaris, a Hydroid inhahitimj Sponges .. .. No. 4 431 



Structure of the Aplysinidce » 



Structure of Spongelia " 



Spongiological Studies No. 7 894 



Development of Horny Sponges >, 897 



Protozoa. 



Contributions to our Knowledge of the Protozoa ,. .. No. 1 42 



T/ie Generation of Gas in the Protoplasm of living Protozoa „ 72 



1 he Organs of Attachment of Stentors „ 83 



The Morphology of the Oxytrichina „ 91 



Parasitism amongst Infusoria .> 9^ 



Gloidiiim, anew Genus of Protista No. 2 179 



Flagellated Organisms in Bats' Blood „ 190 



Heprodu tion of Noctiluca » 195 



Eoioon Canadcnse .. .. No. 3 275 



Beticularian Rhizopoda » 276 



Protozoa of Northern Russia ,. 276 



Evolutionof the Infusoria from the Lower Protozoa.. .. No. 4 438 



Acineta; and Vorticellw ?j ^''^ 



Researches on the AcimtiC )> '^'^^ 



The NoctiluccB »» ^^^ 



Flagelhim of Euglena viridis » 4^ 1 



Anomalies in the Development of the Lowest Organisms .. „ 446 



Tmtinnus scmiciliatus, a new Infusor No. 5 587 



Blepharisma lateritia » ^°° 



Haptophrya gigantea, a new Opalinid from the Intestine 



of the Anowo-us Batrachia » 588 



Steinh ' Organismus der Infusionsthicre ' „ 590 



Effect of Light on Pelomyxa ,. 591 



Eozoon Canadense No. 6 744 



Peridinium and Gymnodinium v 745 



Reticularian Rhizopods No. 7 897 



Structure of Haliphysema Tumanowiczii „ 898 



Observations on New Infusoria >> 899 



Influence of the different Colours of the Solar Spectrum on 



Infusoria " •'^^ 



Supposed new Fresh-v:atcr species of Freia ,, 900 



Lithamceba discus, a new Rhizopod » 900 



New Moneron. iPlate XXVI.) „ 901 



Eozoon Canadense » 902 



Fertilization of Red Algce by the Agency of Infusoria .. „ 932 



BOTANY. 



A.— General, including Embryology and Histology of the Phanerogamia, 



The Ovule No. 1 49 



Sir Joseph Hooker on the Modern Development of Micro- 

 botany I) "' 



New Classification of the Vegetable Kingdom „ 90 



Injlttence of the different colours of the Spectrum on Animals 



and Plants Nu. 2 138 



