CONTENTS 
Transactions of the Society — page 
I. — Some Observations on the Various Forms of Human Sperma- 
tozoa. By It. L. Maddox, M.D., Hon. F.R.M.S. (Plate I.) Part 1 1 
II. — The President’s Address on some Doubtful Points in the Natural 
History of the Rotifera. By C. T. Hudson, LL.D., F.R.S. .. ,, 6 
III. — Report on an Earthworm collected for the Natural History 
Department of the British Museum, by Emin Pasha, in 
Equatorial Africa. By W. B. Benham, D.Sc. (Plates III. 
and IV.) Part 2 161 
IV. — New and Foreign Rotifera. By Surgeon V. Gunson Thorpe, 
R.N., F.R.M.S. (Plates VI. and VII.) Part 3 301 
V. — A New Method of Infiltrating Osseous and Dental Tissues. 
By T. Charters White, M.R.C.S., F.R.M.S „ 307 
VI. — On Bull’s-eyes for the Microscope. By E. M. Nelson, F.R.M.S. 
(Figs. 32-35) „ 309 
VII. — On the Structure of certain Diatom-valves as shown by sec- 
tions of charged specimens. By C. Haughton Gill, F.C.S., 
F.R.M.S. (Plate VIII.) Part 4 441 
VIII.— A New Illuminating Apparatus. By E. M. Nelson, F.R.M.S. 
(Figs. 51 and 52) „ 443 
IX. — The Foraminifera of the Gault of Folkestone. — I. By 
Frederick Chapman. (Plate IX.) Part 5 565 
X. — Notes of New Infusoria from the Fresh Waters of the United 
States, By Dr. Alfred C. Stokes. (Plate X.) Part 6 697 
XI. — On an Improved Method of making Microscopical Measure- 
ments with the Camera Lucida. By Sir Walter Sendall, 
K.C.M.G.,M, A., F.R.M.S. (Figs. 77-80) „ 705 
Summary of Current Researches relating to Zoology and Botany (princi- 
pally Invertebrata and Cryptogamia), Microscopy, &c., including Original 
Communications from Fellows and Others.* 19, 169, 315, 447, 576, 710 
ZOOLOGY. 
A. — Vertebrata : — Embryology, Histology, and General, 
o. Embryology. 
PAGE 
Gulick, J. T . — Preservation and Accumulation of Cross- Infertility .. .. Part 1 19 
Hertwig, O . — Experimental Studies on Ova ,, 19 
Holl, M . — Maturation of the Ovum of the Foul ,, 20 
Tarulli, L . — The Pressure within the Egg of the Fowl „ 21 
Spencer, W. B . — Formation of a Double Embryo in the Hen’s-egg . . . . „ 12 
Rossi, O . — Maturation of Amphibian Ova n 21 
Paladino, G . — The Formation of the Zona pellucida „ 22 
Mitsukuri, K . — Foetal Membranes of Chelonia ,, 22 
* In order to make the classification complete, (1) the papers printed in the 
1 Transactions,’ (2) the abstracts of the ‘ Bibliography,’ and (3) the notes printed in 
the ‘ Proceedings ’ are included here. 
