CONTENTS. 



TRANSACTIONS OF THE SOCIETY. 



PAGE 



I. — A Geometric Slide PhotomicrograpMc Apparatus. By J. E. Barnard. 



(Figs. 1-4.) 1 



II.— British Enchytrseids. By The Rev. Hilderic Friend, F.L.S., F.R.M.S. 



(Figs. 5-14.) ;» 



III. — The President's Address : On Certain Blood Parasites. By H. G. 



Plimmer, F.R.S. (Plates I. and II.) 133 



IV. — Fourth List of New Rotifers since 1889. By Charles F. Rousselet, 



F.R.M.S 151 



v.— British Tubificid*. By The Rev. Hilderic Friend, F.L.S., F.R.M.S. 



(Figs. 40-52) 205 



VI. — On a Modified Form of the Lever Fine- Adjustment, and a Simple Turn- 

 out Device for the Sub-stage Condenser ; with a Note on the Use of the 

 Bertrand Lens. By E. B. Stringer. (Figs. 53-55.) 294 



VII. — Notes on the Life-historv of .some Marine Diatoms from Bournemouth. 



By J. D. Siddall, Chester. (Plates III., IV.) :;!?7 



Vlll. — On some Foraminifera from the North Sea, etc., dredged by the Fisheries 

 Cruiser ' Goldseeker ' (International North Sea Investigations — Scotland.) 

 I. On some New AstrorliizidtB and their Shell-structure. By Edwanl 

 Heron-Allen, F.L.S., F.R.M.S., and Arthur Earland, F.R.M.S. (Plates 

 v., VI.) 382 



IX.— Notes on Pollen. By The Right Hon. Lord Avebury, P.O., F.R.S., 



D.C.L., LL.D. (Plates VIL, VIII.) 473 



X.— British Enchytrsids. By the Rev. Hilderic Friend, F.L.S., F.R.:\I.S. 



(Figs. 107-118) :"( 



SUMMARY OF CURRENT RESEARCHES 



ZOOLOGY. 



VERTEBRATA. 



a. Embryolog-y. 



Adloff, p. — I'lacoid Tooth-rudimentx in Mail ^8 



SoBOTTA, J. — Pre-plarental Nutrition in Mouse 2S 



RoHDE, Emil — Chromatin-rtduction 28 



Plenk. 'H.— Size of Cells and Body-growth -9 



Olivek, K. K.— Displacement of Optic Lobes in Fowl's Brain 29 



Kelsey, HEhEii— Subdivision of Spinal Canal in Lumbar Region of Chick Embryos 2y 



