CONTENTS. 



Transactions op the Society — 



PAOB 



I. — Fresh-water Algae (including Chlorophyllaceous Proto- 

 phyta) of the English Lake District; with descriptions 

 of twelve New Species. By Alfred W. Bennett, F.E.M.S., 

 F.L.S., Lecturer on Botany at St. Thomas's Hospital. 

 (Plates L&IL) Parti 1 



IL — Explanatory Notes on a series of Slides presented to the 

 Society, illustrating the action of a diamond in ruling 

 lines upon glass. By Prof. William A. Rogers, P.R.M.S. „ 16 



III. — On the Preparation of Sections of Pumice-stone and other 



Vesicular Rocks. By H. J. Jolmston-Lavi3,M.D.,F.G.S. „ 22 



IV. — On the Cultivation of Bacteria. By Edgar M. Crookshank, 



M.B. Lond., F.R.M.S. (Plates IIL-V.) „ 25 



V, — On the Appearances which some Micro-organisms present 

 under different conditions, as exemplified in the Microbe 

 of Chicken Cholera. By G. F. Dowdeswell, M.A., 

 F.R.M.S., F.L.S., &c. (Plate VI.) „ 32 



VI. — On " Central " Light in Resolution. By J. W. Stephenson, 



F.R.M.S., F.R.A.S. (Figs. 1-4) , 37 



VII. — The President's Address. By the Rev. W. H. Dallinger, 



LL.D., F.R.S. (Plates VII., VIIL and IX.) .. .. ° .. Part 2 193 



VIII. — Upon the Life-history of an Acarus one stage whereof is 

 known as Labidophorus talpaj, Kramer ; and upon an 

 unrecorded species of Disparipes. By Albert D. Michael, 

 F.L.S., F.Z.S., F.R.M.S. (Plates X. and XL) .. ..Part 3 377 



IX. — On Micrococcus Pasteuri (Sternberg). By George M. 

 Sternberg, M.D., F.R M.S., Major and Surgeon U.S. 



Army. (Figs. 75-80) „ 391 



X.— New Polarizing Prism. By C. D. Ahrens. (Fig. 81) .. „ 397 



XL— Notes on the Structure and Evolution of the Floridese. 



By George Massee, F.R.M.S. (Plates XIL and XIII.) Part 4 561 



XII. — On some Microzoa from the London Clay exposed in the 

 Drainage Works, Piccadilly, London, 1885. Ey Charles 

 D. Sherborn and Frederick Chapman. (Plate XIV., XV., 

 andXVI.) (Figs. 154, 155 & 156) Part 5 737 



XIII. — Flagellated Protozoa in the Blood of Diseased and appa- 

 rently Healthy Animals. By Edgar M. Crookshank, M.B. 

 Loud., F.R.M.S. (Plate XVII. and figs. 193-199.) .. Part 6 913 



XIV. — On Trichodina as an Endoparasite. By T. B. Rosseter, 



F.R.M.S. (Plate XVIII.) ,, 929 



