CONTENTS. 



Tbansactions op the Society — 



PAGE 



I. — Observations on the Anatomy of the Oribatidse. By A. D. 



Michael, F.L.S., F.E.M.S. (Plates I. and II.) ,. ..Parti I 

 II. — On a Minute Form of Parasitical Protophyte. By G. F. 



Dowdeswell, M.A., F.E.M.S ,. „ 26 



III. — On the use of Incandescence Lamps as Accessories to the 



Microscope. By C. H. Steam, F.E.M.S. (Figs. 1-6) .. „ 29 



IV. — Five New Floscules ; "with a Note on Prof. Leidy's Genera 

 of Acyclus and Dictyophora. By C. T. Hudson, LL.D., 

 F.E.M.S. (Plates III. and IV. Figs. 31 and 32.) ,. Part 2 161 

 V. — The President's Address. By Prof. P. Martin Duncan, 



M.B. Lond.,F.E.S „ 172 



VI. — The Action of Tannin on the Cilia of Infusoria, with Ee- 

 marks on the use of Solution of Sulphurous Oxide in 

 Alcohol. By Henry J. Waddington. (Figs. 33 and 34) „ 185 

 VII.— On the Eed Mould of Barley. By Charles George 



Matthews, F.O.S., F.I.C. (Plates V. and VI.) .. .. Part 3 321 

 VIII. — The Cultivation and Life-History of the Eingworm Fungus 

 {Trichophyton tonsurans).'. By Malcolm Morris, F.E.C.S. 

 Ed., and J. C. Henderson, M.D., M.E.C.P. (Plate VII.) „ 329 

 IX. — On a Portable Form of Aeroscope and Aspirator. By E. L. 



Maddos, M.D., Hon. F.E.M.S. (Figs. 58 and 59) .. .. „ 338 

 X. — On the Spicules of Cucumaria hyndmanni, C. calcigera, and 

 two Allied Forms. By Professor F. Jeffrey Bell, M.A., 



Sec. E.M.S. (Plate VIII.) Part 4 481 



XI. — On a Method of Preserving the Fresh- water Medusa. By 



Peter Squire, F.L.S. (Fig. 90) „ 485 



XII. — On Asplanchna Ehhesbornii nov. sp. By 0. T. Hudson, 



LL.D., F.E.M.S. (Plates IX. and X.) Part 5 621 



Xni. — On some new Cladocera of the English Lakes. By Conrad 



Beck. (Plates XI. and Xn.) Part 6 777 



XIV. — On an Improved Method of Preparing Embryological and 

 other delicate Organisms for Microscopical Examination. 

 By Edward Lovett „ 785 



XV. — The Eolation of Aperture and Power in the Microscope 



(continued). By Professor E. Abbe, Hon. F.E.M.S. . . „ 790 

 XVI. — On a New Camera Lucida. By Dr. Hugo Schroder. (Figs. 



152 and 153) | „ 813 



XVII. — On " Optical Tube-length " : an Unconsidered Element in 

 the Theory of the Microscope. By Frank Crisp, LL.B., 

 B.A., V.P.L.S., Sec. E.M.S. (Fig. 154) „ 816 



