CONTENTS. V 



PART No. 46, APRIL 1900. 



Papers. page 



J. G. Waller, F.S.A. An Unclescribed British Sponge (Plate 14) . 253 



A. Earland. Fiadiolaria (Plates 15 and 16) 257 



A. Earland. a List of Fossil Eadiolaria from Barbados . . . 285 

 A. A. Merlin, F.K.M.S. Minute Structure of some Diatomacese 



(Plate 17) 295 



John Tatham, M.A., M.D. President's Address .... 299 



Notes. 



D. J. Scourfibld, F.E.M.S. Scajylwleheris mucronata and the 



Surface-film of Water. (Illustrated) .309 



C. F. Eousselet, F.E.M.S. The Genus Lacinularia . . . 313 



G. C. Karop, M.E.C.S., F.E.M.S. Specialisation in Cytology . . 315 



A New Hand Microtome. (Illustrated) ...... 317 



Reviews. 



Notices of K. Lajvipert's "Das Leben der Binnengewasser " ; "The 

 Illustrated Annual of Microscopy, 1900"; J. G. Wood's "Common 

 Objects of the Microscope"; "Who's Who, 1900"; D. H. 

 Scott's " An Introduction to Structural Botany " ; J. M. Flint's 

 " Eecent Foraminifera " ; and Sir E. Fry's " The Mycetozoa " . 321 



Proceedings, etc. 



From October 20th, 1899, to February 16th, ISOO, inclusive . . 329 



Objects Exhibited, with Notes. February 3rd, 1899, to February 



16th, 1900 346 



Thirty-fourth Annual Eeport of the Committee (for 1899) . . .350 

 Eeport of the Treasurer for 1899 . . . . . . . . 354 



PART No. 47, NOVEMBER 1900. 



Papers. 



T. B. EOSSETER, F.E.M.S. The Anatomy of Bicranotmiia con 



(Plates 18 and 19) • . . , . 355 



E. S. Salmon, F.L.S. New or Eare British Fungi (Plate 20) . . 371 



E. M. Nelson, F.E.M.S. ActinocycUis Ralfsii 377 



E. T. Lewis, F.E.M.S. A Contribution to the Life History of Ixodes 



Teduvius, Linn. (Plate 21) 381 



A. A. Merlin, F.E.M.S. Structural Division of the Endoplasm in 



Bacilli of the Bubonic Plague. (Illustrated) .... 387 



C. D. Soar, F.E.M.S. A List of Fresh-water Mites found near 



Oban, N.B - 391 



D. J. Scourfield, F.E.M.S. The Swimming Peculiarities of Dajjlmia 



and its Allies, with an Account of a New Method of Examining 

 Living Entomostraca, etc. (Illustrated) 395 



