( 2 ) 



JOUKNAL 



OF THE 



EOYAL MICROSCOPICAL SOCIETY. 



Ser. 2.— Vol. I. Part 6. 



(DECEMBER.) 



CONTENTS. 



Transactions of the Society — pag 

 XII. — Diatoms from Peruvian Guano. By the Rev. Lewis G. 



Mills, LL.D., r.R.M.S., &c. (Plate XI.) 86^ 



XIII. — Multiple Staining of Animal Tissues with Picro- 

 carmine, Iodine, and Malachite-green Dyes, and of 

 Vegetable Tissues with Atlas-scarlet, Soluble Blue, 

 Iodine, and Malachite-green Dies. By B. Wills 

 Eicbardson, F.E.C.S.I., Vice-President, University of 



Dublin Biological Association 868 



Summary of Current Researches relating to Zoology and 

 Botany (principally Invertebrata and Cryptogamia), Micro- 

 scopy, &c., including Original Communications from Fellows 



AND others 873 



Zoology. 



Mesohlast of the Vertehrata 873 



Experiments on the Origin of the Difference heticeen the Sexes 874 



Cochlea of the Monotremnta 875 



Balfour's Comparative Embryology , . 876 



Vessels of the Ink-bag of Cephalopoda 876 



Chemical Composition of the Inlc of Cephalopoda 877 



Development of Neritina fluviatilis 877 



Locomotor Organs of Cyclostoma elegans 878 



Innervation of the Heart, and Influence of Poisons on LamdUbranchiata . . 879 



Development of DoUolum 879 



Celleporx from the ' Challenger ' 880 



* Challenger' Bryozoa from Mai ion Islands 881 



Fossil Diastoporidse 882 



Carboniferous Fenestellidas 882 



Colour-Sense in Insects and Crustacea .. 882 



Beetle with Proboscis like that of Lepidoptera 884 



Structure and Hatching of Egg-capsules, &c., in ManU's 884 



Observations on Acarida 885 



Pycnogonida of the ' Challenger ' Expedition 886 



Hairs of the Anterior Antennx of Crustacea 886 



Nervous System and Sense-Organs of Sphxroma serratum 886 



Organization of Terrestrial Lumbricina 887 



Action of Worms in tlie Formation of Vegetable Mould 888 



Prefecundxdion in Spio 890 



Northern Gephyrea 890 



Hamingia gkicialis 891 



Anatomy of Sipunculus nudus 892 



Development of Tricuspiduria nodulosa 892 



Development of the Trematoda 892 



Distomum of the Crayfish 893 



Urinary Apparatus and Blood-lymph Spaces of the Platodea 893 



