( 2 ) 



JOURNAL 



OF THE 



EOYAL MICROSCOPICAL SOCIETY. 



Ser. 2.— Vol. I. Part 2. 



(APRIL.) 



CONTENTS. 



Tbansaotions of the Society — page 



II. — On a EadioiiArian and some Miobospongida from oonsi- 



DEBABLE DEPTHS IN THE ATLANTIC OcEAN. By ProfeSSOr 



P. Martin Duncan, M.B. (Lond.), F.RS., &c., Vice-Pres. 



R.M.S. (Plate III.) 173 



III. — The Pbesident'8 Address. By Lionel S. Beale, F.E.S. .. 180 



lY. — On the Conditions op Orthoscopio and Pseudoscopio Effects 

 IN the Binoottlar Microscope. By Professor E. Abbe, 



Hon. F.E.M.S. (Figs. 36-38) 203 



V. — On a Species of Aoarus, believed to be Unrecorded. By 



A. D. Michael, F.L.S., F.R.M.S. (Plate IV.) 212 



On the Estimation of Aperture in the Microscope. By Pro- 

 fessor E. Abbe, Hon. F.E.M.S. 



[This will be reprinted with its proper pagination in the next 

 number of the Journal.] 



Summary of Current Eesbabohes relating to Zoology and 

 Botany (principally Invebtbbrata and Cryptogamia), Micro- 

 scopy, &c., INCLUDING Original Communications from Fellows 



AND OTHERS 217 



Zoology. 



Development of the Graafian Veeicles 217 



Development of Parrots .. .. 217 



Epidermis of Salamander 218 



Ciliated CeUs 221 



Central Nervous System of Beptiles and Batrachians 224 



Cellular Irritability 225 



Epithelium of the Human Stomach 225 



Influence of the Mode of Preparation on the Movements of Protoplasm .. 225 



Passage of Red Bloodrcorpuscles into the Lymphatic Circulation .. ., 226 

 Belations between Muscular Activity and, Breaking down of Material in 



the Animal Body 226 



Discrimination of Species 227 



Structure and Histology of th,e Ink-bag of Sepia 227 



Genealogy of the Ammonites 228 



Gustatory Organs of the Heteropoda 228 



Lung of Onchidium 229 



Digestive, Nervous, and Reproductive Organs of Onchidium 230 



EyeofPecten _ 230 



Segmental Organs of the Endhproat Bryoxoa . . 233 



Relationship of the Genus Heteropora to Monticulipora 233 



Comparative Anatomy of the Nervous System of Insects 234 



Sensory Nerve-endings in Skin of Insects .. . . 235 



Relation of Devonian Insects to Later and Existing Types 236 



Bead and Mouth Organs of Diptera 2;-i6 



Scent-apparatus of Sphinx ligustri 238 



"Houses" of the Larvse of the Trichoptera 239 



Blastoderm of the Araneina 239 



Crustacea from the Chdf of Mexico and the Caribbean Sea 240 



Sensory Rods of First Pair of Antennsg in Crustacea 241 



Australian and Tasmanian Amphipods 241 



