CONTENTS. 
Transactions of the Society — 
PAGE 
I. — The President’s Address : The History of the Boyal 
Microscopical Society. By A. D. Michael, F.L.S., &c. .. 1 
II. — A New Erecting Camera Lucida. By Edward M. Nelson, 
F.R.M.S. (Figs. 1-3) 21 
III. — A Portable Microscope by J. Zentmayer of Philadelphia. 
By Edward M. Nelson, F.R.M.S. (Figs. 4 and 5) .. .. 26 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
VERTEBRATA : — Embryology, Histology, and General. 
a. Embryology. 
Sedgwick, A . — Inadequacy of Cellular Theory of Development 29 
Zoja, R . — Experimental Embryology 30 
Manton, W. O . — Human Embryology 30 
Jacoby, M . — Development of Primordial Cranium in Man 30 
Mertens, H. — Vitelline Body of Balbiani 31 
Buhler, A . — Oogenesis in the Rabbit, and the Medullary Strands of the Ovary in 
Fox and Man 31 
Saint-Remy, G . — Anterior Extremity of Notochord in higher Vertebrates 31 
Mazzarelli, G . — Origin of Sympathetic System 31 
Langer, A . — Bulbus Cordis in Birds and Mammals 32 
Leighton, Y. L . — Development of Wing of Sterna Wilsoni 32 
Field, H. H . — Notes on Development of Amphibia 32 
Harrison, R. G . — Origin of Bones of Teleosteans 32 
Gegenbaur, C . — Fins of Fishes 33 
Holm, John F . — Development of Olfactory Organ of Torpedo 33 
Beard, J . — Pronephros of Lepidosteus 34 
Meves, F . — Metamorphosis of the Attraction-sphere in Spermatogonia of Salamander 34 
A Histology. 
Heidenhain, M . — The Central Corpuscles 34 
Reinke, F. — Cell-Studies 37 
Druner, L . — Nature of the Central Spindle 37 
Herla, Y . — Variations in Mitosis 37 
Heidenhain, M. — Giant-Cells of the Medulla of Bones 38 
Kanthack, A. A., & W. B. Hardy — Morphology and Distribution of Wandering 
Cells of Mammalia 38 
Allen, E. J . — Beading of Nerve-Fibres 39 
Fish — Terminology of Nerve-Cell 40 
y. General. 
Verworn, Max — Physiological Research 40 
Zenneck, J . — Origin of Markings in Grass Snake 40 
Nagel, W. A. — Light-Sense in Blind Animals 40 
Hedley, C . — Faunal Regions of Australia 40 
INVERTEBRATA. 
Kowalevsky, A . — Lymphatic Glands of Invertebrates 41 
Dendy — Cryptozoic Fauna of New Zealand 42 
Zschokke, F . — Fauna of Lakes of the Jura 42 
Breckinridge, C. B . — North American Mesozoic Invertebrata 42 
Chapman, F . — Microscopic Contents of Bargate Beds 42 
Tunicata. 
Pizon, A . — Evolution of Sexual Elements in Compound Ascidians 42 
Samassa, P . — Cleavage of Ascidian Ova 42 
Calm an, W. T . — Julinia 43 
a 
