( 2 ) 



JOURNAL 



OF THE 



KOYAL MICROSCOPICAL SOCIETY. 



Ser. 2.— Vol. II. Part 3. 



(JUNE, 1882.) 



CONTENTS. 



Traksactions of the Society — page 



VII. — Note on the Spicules found in the Ambulacbal Tubes op 

 THE EEGULAE EcHiNOiDEA. By Professor F. Jeffrey Bell, 



M.A., F.R.M.S. (Plate V.) .. .. 297 



VIII. — The Relation of Apertuee and Power in the Microscope. 



By Professor Abbe, Hon. F.E.M.S. 300 



IX. — The Bacteria op Davaine's Septicemia. By G. F. Dowdes- 



well, M.A., F.E.M.S., F.C.S., &c. .. 310 



Summary of Current Researches relating to Zoology and 

 Botany (peincipally Inveetebrata and Ceyptogamia), Micro- 

 scopy, &c., including Original Communications from Fellows 



AND others 314 



Zoology. 



Germinal Layers of the Chick .. .. 314 



Development of Lepidosteus ^ .. 316 



Spermatogenesis in VeHebraies and Annelids 316 



Cell-structure .. .. 317 



Theory of Amoeboid Movements .. 319 



Distinctions between Organisms and Minerals 320 



"■ Syiiibiosis of Animals with Plants" — ChlorophyU-corpuscles and Amyloid 



Deposits of SpongiUa and Hydra . . . . . . , , 322 



Palxotitological Significance of the Trades of Different Invertebrates .. .. 324 



Lymph of Invertebrates 327 



Development of the Cephalopoda 328 



Development of the Oyster , . . . . 330 



Abortion of Heproductive Organs of Vitrina 330 



Morphology of the Amphineura 331 



New Synascidian 331 



Alternation of Generations in Doliolum 331 



Nervous System of the Larvee of Diptera 333 



Occident Ants . . . . 333 



Fycnogonida 335 



Spiders' Webs 337 



Limulus a Crustacean 337 



Segmental Organs in Isopoda .. .. 337 



Bopyridas 338 



Peculiar mode of Copulation in Marine Dendrocoela 340 



Classification of *he Nematohelminthes 340 



Relations of the Plutyhelminthes 340 



Entozoa confounded with Trichinx 342 



Life-History of the Liver Fluhe 342 



Excretory Apparatus of Turbellaria 344 



New Parasites 345 



