CONTENTS. 
Transactions of the Society — page 
I. — Some Observations on the Various Forms of Human 
Spermatozoa. By R. L. Maddox, M.D., Hon. F.R.M.S. 
(Plate I.) 1 
IT. — 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 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
A. VERTEBRATA : — Embryology, Histology, and General. 
a. Embryology. 
Gulick, J. T . — Preservation and Accumulation of Cross-Infertility 19 
Hertwig, O . — Experimental Studies on Ova 19 
Holl, M . — Maturation of the Ovum of the Fowl 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 21 
Rossi, O . — Maturation of Amphibian Ova 21 
Paladino, G . — The Formation of the Zona pellucida 22 
Mitsukuri, K. — Foetal Membranes of Chelonia 22 
Kollmann, J . — Formation of the Notochord in the Human Embryo 22 
Kuborn, P . — Development of Vessels and Blood in the Embryonic Liver 23 
Semon, R . — Delation of Mesonephros to the Pronephros and Supra-renal Bodies . . 23 
W iedersheim, It . — Development of Urinogenital Apparatus of Crocodiles and 
Chelonians 23 
Janosik, J . — Development of the Reproductive System 21 
Coggi, A . — Structure of Nervous Cells 21 
Minot, C. S . — Morphology of Blood-corpuscles 25 
B. INVERTEBRATA. 
Leiby — Parasites of Mola rotunda 25 
Mollusca. 
o. Cephalopoda* 
Appellof, A . — Notes on Cephalopods 25 
y. Gastropoda. 
Garstang, W . — List of Opisthobranchiate Mollusca of Plymouth 26 
Boutan, L . — Nervous System of Parmophorus australis 26 
Bouvier, E. L . — Nervous System of Cyprxa 27 
Pruvot, G . — Development of a Solenogaster 27 
5. Lamellibranchiata. 
Pelseneer, P . — Primitive Structure of Kidney of Lamellibranchs 28 
Molluscoida. 
a. Tunicata. 
Morgan, T, H . — Origin of Test-cells of Ascidians 29 
/3. Bryozoa. 
Prouho, H . — Cyclatella annelidicola .. 29 
Arthropoda. 
Fernald, H. T . — Relationships of Arthropods 29 
Demoor, J . — Experimental Researches on Locomotion of Arthropods 31 
Patten, W . — Is the Ommatulium a llair-bearing Sense-bud ? 32 
