CONTENTS. 



TRANSACTIONS OF THE SOCIETY. 



PAGE 



I. — The Binocular Microscope. By Felix Jentsch, Ph.D. (Figs. 1-3) .. .. 1 



II. — The Binocular Microscope of the Past, and a New Form of Instrument. 



By Conrad Beck. (Plates I, II; 17 



III.— Development of an Embiid. By J. C. Kershaw, F.Z.S. (Plates III, IV, 



and Fig. 4) 24 



IV. — Notes on Shell-structure iu the Genus Lingula, Recent and Fossil. By 



Frederick Chapman, A.L.S., F.R.M.S. (Plate V) 28 



V.— The President's Address. By G. Sims Woodhead 109 



VI.— British Enchytrseids. By the Rev. Hilderic Friend, F.R.M.S. (Figs. 15- 19) 128 



VII. — Some Observations on the Morphological Changes occurring in Beggiatoa 

 alba on Staining by various Methods. By E. Moore Mumford. 

 (Plates VI, VII) 233 



VIII.— The Buzzing of Diptera. By P. A. Aubiu, F.R.M.S. (Plates VIII, IX, X) 329 



IX. — Notes on some Focometric Apparatus. By Frederic J. Cheshire. 



(Figs. 52-5) 513 



NOTE. 



Note on Sphierotilus. By E. Moore Mumford .. 433 



OBITUARIES. 



Albert Grunow, Hon.F.R.M.S. By J. B. De Toni, Hon.F.R.M.S 236 



Thomas J. Barratt. 1841-1914 237 



John Davies Siddall. 1844-1914 238 



Philippe Edouard Le'on van Tieghem, Hon. F.R.M.S. 1839-1914 335 



