CONTENTS. 
TRANSACTIONS OF THE SOCIETY. 
PAGE 
I. — The Micro-Examination of Metals, with Special 
Reference to Silver, Gold and the Platinum 
Metals. By Georoe Patchin, A.R.S.M., M.I.M.M. 
(Two Plates) 1 
II. — The Aoe and Growth of Some Eels from a Small 
Worcestershire Pond. By A. Gandolfi Hornyold, 
D.Sc., F.R.M.S. (Eight Text-Figures) 9 
III. — Notes on Fresh-water Ciliate Protozoa of India. 
—II. By B. L. Bhatia, M.Sc., F.Z.S., F.R.M.S., 
Assistant Professor of Zoology, Government College, 
Lahore 27 
IY. — Contributions to the Histology of the Three-toed 
Sloth (Bradypus Tridactylus). By Charles F. 
Sonntag, M.D., F.Z.S., F.R.M.S., Anatomist to the 
Zoological Society of London ; and F. Martin Duncan, 
F.R.P.S., F.Z.S., F.R.M.S. (Thirteen Text-Figures) . . 37 
V. — The Morphology and Physiology of the Nucleolus. 
Part I. — The Nucleolus in the Germ-Cell 
Cycle of the Mollusc Limn^ea stagnalis. By 
Reginald James Ludford, Ph.D. B.Sc. (Lond.), 
F.R.M.S., Dept, of Embryology and Histology, Uni- 
versity College, London. (Three Plates) 113 
YI. — The Microstructure of Coal from an Industrial 
Standpoint. By A. L. Booth, A.I.C. (Messrs. 
Armstrong, Whitworth & Co., Ltd.). (Two' Plates) . . 151 
YII. — Note on a Trematode from Rainbow Trout. By 
W. Rushton, A.R.C.Sc., D.I.C., B.Sc. F.L.S. (Two 
Text-Figures) 161 
VIII. — The Gametogenesis of NepaCinerea (Water Scorpion). 
By E. A. Spaul, B.Sc., Department of Zoology, Birkbeck 
College, University of London. (Two Plates) . . . . 237 
IX. — A Low-Power Eye-Piece with Large Field. By H. 
Hartridge, M.D., Sc.D., F.R.M.S., Fellow of King’s 
College, Cambridge. (One Text-Figure) 243 
X. — The Use of the Microscope in the Rubber Industry 
(Eastern Plantations). By Herbert Sutcliffe, 
A.R.C.Sc., F.L.S., F.R.M.S. (Two Plates) 
245 
