CONTENTS. 



TRANSACTIONS OF THE SOCIETY. 



PAGE 



I. — The Mouth-parts of the Nemocera and their Relations to the other 

 Families in Diptera. Corrections and additions to the paper 

 published in 1904. By W. Wesche, F.R.M.S. (Plates I. to IV.) .. 1 



II. — Note on a New Growing Cell for Critical Observations under the Highest 



Powers. By A. A. C. Eliot Merlin. (Fig. I) 17 



III.— A Workshop Microscope. By J. E. Stead, F.R.S. (Fig. 2) 20 



IV. — A Simple Method of Illuminating Opaque Objects. By J. E. Stead, 



F.E.S. (Figs. 3-5) 22 



V. — On Mounting Rotifers and Protista in Canada Balsam. By The Rev. 



Eustace Tozer. (Fig. 6) 24 



VI.— The "Red Snow" Plant, Sphserella nivalis. By G. S. West, M.A., D.Sc. 



F.L.S 28 



> 



VII. — The President's Address: On Seeds with Special Reference to British 

 Plants. By the Right Hon. Lord Avebury, P.C., D.C.L., LL.D., 

 F.R.S. (Figs. 20-41) 137 



VIII. — Some Remarks on a German Silver Powell Portable Microscope made in 



1850. By A. A. C. Eliot Merlin 167 



IX. — On Syncliseta fehnica sp. n., and Remarks on the Resting-egg of Synchxta 



peclinata. By C. F. Rousselet, F.R.M.S. (Plate V.) 170 



X. — On the Fresh-water Crustacea of Algeria and Tunisia. By Robert 



Gurney. (Plates VII. to XIV.) 273 



XI. — On the Recent and Fossil Foraminifera of the Shore-sands of Selsey Bill, 

 Sussex.- II. By Edward Heron-Allen, F.L.S.. F.R.M.S., and 



Arthur Earland. (Plates XV., XVI.) 306 



XII. — A New Illuminator for the Microscope. By J. W. Gordon, F.R.M.S. 



(Figs. 71, 72) 417 



XIII. — On the Recent and Fossil Foraminifera of the Shore-snnds of Selsey Bill, 

 Sussex.— III. By Edward Heron-Allen, F.L.S., F.R.M.S.. and 

 Arthur Earland. (Plates XVIL, XVIII.) 422 



XIV.— On the Measurement of Very Minute Microscopical Objects. By Edward 



M.Nelson 540 



XV.— The Disappearance of the Nucleolus in Mitosis. By E. J. Sheppard, 



F.R.M.S. (Plate XIX.) 551 



XVI.— On the Recent and Fossil Foraminifera of the Shore-sands of Selsey Bill. 

 Sussex,— IV. By Edward Heron-Allen, F.L.S., F.R.M.S., and 

 Arthur Earland. (Plates XX.. XXI.) 67 < 



