CONTENTS. 



TRANSACTIONS OF THE SOCIETY. 



PAGK 



I. — X-rays in Relation to Microscopy. By J. E. Barnard. (Plate I. and Fig. 1) 1 



II. — Notes on the Structure of Tests of Fresh-water Rhizopoda. By George 



Herbert Wailes, F.L.S. (Plates II. and III.) .. ..' 105 



* 



III. — A New Mitotic Structure disclosed as the Result of New Technique. By 



E. Sheppard, F.R.M.S. (Plate IV. and Fig. 15) 117 



IV. — The President's Address : On Some of the Microbiological Problems of 



the Present War. By G. Sims Woodhead. (Figs. 22-5) 205 



V. — A Simple Form of Spectroscope and Micro-Spectroscope. By Julius 



Rheinberg. (Figs. 26-8) 227 



VI. — The Dawn of Microscopical Discovery. By Charles Singer. (Figs. 38-48) 317 



VII. — On the Male Genital Armature of the Dermaptera. Part I.: Protoder- 

 maptera (except Psalidse). By Malcolm Burr, M.A. D.Sc. F.L.S. F.E.S. 

 Communicated by John Hopkinson, V.-P. R.M.S. (Plates V. to IX. 

 and Figs. 55-7) 413 



VIII. — On the Male Genital Armature of the Dermaptera. Part II. : Psalidae. 

 By Malcolm Burr, M.A. D.Sc. F.L.S. F.E.S. Communicated by John 

 Hopkinson, V.-P. R.M.S. (Plates X. to XII. and Figs. 58-64) .. .. 521 



IX. —A Short Statement upon the Theory, and the Phenomena of Purpose and 

 Intelligence Exhibited by the Protozoa, as Illustrated by Selection and 

 Behaviour in the Foraminifera. By Edward Heron-Allen, F.L.S. 

 F.Z.S. F.R.M.S 547 



NOTES. 



Objective Screw Thread. (Fig. 29) 230 



lioyal Microscopical Standards for Eye-pieces and Substage '58 



OBITUARY. 



August Weismann. 1834-1914 8 



