CONTENTS. 



TUANSACTIONS OF THE SoCIETT PAGB 



XVIII. — ^Descbiption and Life-histoky or a new Fungus, Milowia 



NivEA. By G. Massee,F.E.M.S. (Plate XII.) .. .. ..841 



XIX. — Notes on the Structueal Charactees of the Spines of 

 EcHiNomEA. (CiDAKiD^.) By Professor F. Jeffrey Bell, 



M.A., Sec. K.M.S. (Plate XIIL) 846 



XX. — Keseaeohes on the Structure op the Cell-walls op 



Diatoms — Eupodisous. By Dr J. H. L. Flogel (Fig. 144) 851 

 XXI. — On some Photographs of Broken Diatom Valves, taken 



BY Lamplight. By Jacol>D. Cox, LL.D., F.E.M.S. .. 853 

 Summary of Cueeent Eeseaecues relating to Zoology and 

 Botany (peinoipally Invertebrata and Cryptogamia), Mioro- 

 soopY, &c., including Oeiginal Communications from Fellows 



AND others 859 



Zoology. 



Physiology of Protoplasmic Movement , 859 



Power of Reducing Silver possessed by Animal Protoplasm .. . . . . 861 



Foetus of Gorilla 861 



Influence of Magnetism on the Development of the Embryo 861 



Blastopore of the Newt . . 862 



Natural and Artifieiul Fertilization of Herring Ova 862 



Development of Pelagic Fish-Eggs .. .. 863 



Cell-Division, the Belation of its Direction to Gravity and other Forces . . 865 



Aspects of the Body in Vertebrates and Arthropods ,. .. 866 



Function of Chlorophyll in Animals 866 



Action of High Pressures on Putrefaction and on the Vitality of Micro- 

 organisms •• .. 867 



Operculum and Foot-glands of Gastropoda 869 



Latent Period in the Muscles of Helix 870 



Affinities of Onchidia 870 



Dimorphism of the Spermatozoa in Paludina 871 



Mode of Action of Shell- and Roch-boring Molluscs 872 



Action of Sea Water on Molluscs .. , 873 



Segmentation of Ascidians .. ., 873 



Belation of the Nervous System of the Adult Ascidian to that of the Tailed 



Larvm 874 



Segmentation of Simple Ascidians .. 875 



Development of Social Ascidians .. .. ., 875 



Tunicata of the ' Triton' .. .. 878 



Organization of Anchinia . . . . . . 878 



Closure of the Cyclostomatous Bryozoa . . 879 



Movements of the Heart of Insects during Metamorphosis 879 



Trachess of Insects 880 



Light of Pyrophorus 880 



Sting of Mellif era 880 



Anatomy and Functions of the Tongue of the Honey Bee (Worher) . . . . 881 



^'^ Ignivorous Ant" 882 



Aquatic Lepidopterous Larvm . . 882 



Maxillary Palp of Lepidoptera 883 



; Development of Viviparous Aphides .. .. .. .. 883 



Systematic Position of Pulicidie 884 



Development of Spiders 884 



Anatomy of Spiders 885 



Anatomy of Epeira 885 



Auditory and Olfactory Organs of Spiders .. .. .. .. 886 



Anatomy of Pentastomum protelis 887 



Pycnogonids of the Faeroe Channel 888 



Development of Limulus .. .. 888 



Bate of Development of Cardnus mmnas .. . . 888 



' Challenger ' Isopoda 889 



The Cryptoniscidse 889 



Antennary Gland of Cytheridse 890 



* Challenger' Cirripedia ,. 890 



New Pelagic Larva . . . , 891 



Head-Kidney of Polygordius .. .. 892 



Nervous System of the Archiannelidse .. .. .. .. 893 



