JOURNAL 



OF THE 



EOYAL MICKOSCOPICAL SOCIETY. 



VOL. II. No. 2. 



CONTENTS. 



Tkansaotions of the Society — pagb 



IX. The Pkesident's Address. By H. J. Slack, F.G.S. .. 113 



X. Observations on Dact^looalyx pumioeus (Stutchbuuy), 

 WITH A Description of a New Variety, Dactylooalyx 

 Stutchbubyi. By W. J. Sollas, M.A., F.G.S., &c., &c. 



(Plates V.-VIII.) 122 



XI. The Aperture Question. By J. Mayall, jun., F.K.M.S. . . 134 



Notes and Memoranda .. .. .. .. .. 137 



Cells, and their Vital Phenomena 137 



Picro-caimine for Cell-nuclei 138 



Influence of the different Colours of the Spectrum on Animals and Plants.. 138 



Colonel Woodward on the Oil-Immersion Objectives and the Apertometer . . 140 



Diffraction Experiments with Pleurosigma angulatum 141 



Brain of Invertehrates 112 



• Poison Apparatus and Anal Glands of Anfg 142 



Parthenogenesis in Bees 143 



Hermaphroditism in Perlidx " 144 



Employment of Mixtures of Chromic and Osmic Acids for Histological 



Purposes 144 



Microscopical Research under Difficulties 145 



Degeneration of the Visual Organs in Arachnida .. 146 



Ascent and Circulation of the Sap 147 



Growth of tJie Rout of Phanerogams 149 



Removal of Air from Microscopic Specimens 150 



Immersion Illuminators 151 



Phosphorescence of the Flesh of Lobsters 151 



Species of Marine Crustacea hi Lake Erie 152 



Gigantic Isopod of the Deep Sea 152 



Limicolous Cladocera l^^ 



New Cryptogamic Journals 1^4 



Unit of Micrometry 1^4 



The Tomopteridss. l-''^ 



Abnormal Sexual Organs in ike Horse-Leech • •• 156 



The Early Development of Equisetacese 157 



A New Rotifer — Anurssa longispina 157 



Trichinx 1^^ 



Trichina-phobia at Berlin ' 1^^ 



Organogenic Researches on the Capsule of Mosses and on the Embryo of 



some Polypodiacese « 1^^ 



