CONTENTS. 
Transactions of the Society — PA01 
VI. — On a Series of Lantern Slides : Photomicrographs and 
Photographs of Photomicrographic Apparatus. By A. 
Clifford Mercer, M.D., F.R.M.S. (Plate IV. and Figs. 34-40) 305 
VII. — The Foraminifera of the Gault of Folkestone. By 
Frederick Chapman, F.B.M.S. (Plates V. and VI.) .. .. 319 
VIII. — The Penetrating Power of the Microscope. By Edward 
M. Nelson (Figs. 41 and 42) 331 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
A. VERTEBRATA: — Embryology, Histology, and General, 
a. Embryology. 
Bergh, R. S . — Transmission of Acquired Characters 342 
“ A. M. M. ” — Evolution of Man 342 
Holl, M . — The Human Ovum 342 
Mingazzini, P. — “ Oolysis ” in Seps 343 
Oppel, A . — Fertilization of Ovum of Slow-warm 343 
Bernard, H., & K. Bratuscheck — Gelatinous Sheath round Frog Ova 343 
Blanc, H. — Maturation and Fertilization of Trout Ova 344 
Buveui, Th . — Gonads of Amphioxus 344 
Robinson, A . — Nutritive Importance of Yolh-eac 344 
Mitrophanow, P . — Formation af Peripheral Nervous System of Vertelrrates .. .. 344 
Robinson, A . — Development of Segmentation-cavity, Archenteron, Germinal Layers, 
and Amnion of Mammals 345 
Keibel, F . — Tail of Human Embryos 346 
Kvkenthal, W . — Embryology of Dentition of Marsupials 346 
Parker, T. Jeffery — Development of Apteryx 346 
Clarke, S. F . — Embryology of American Alligator 347 
Gaze, S. H. — Life-history of Vermilion-spotted Newt 347 
Boulenger, G. A . — Tadpoles of European Batrachians 347 
Ruckert, J . — Fertilization of Elasmobranchs 348 
p. Histology. 
Flemming, W. — Cell-division 348 
Beneden, E. van — The Attractive Sphere 348 
y. General. 
Plateau, F . — Protective Resemblance in the Animal Kingdom 349 
Agassiz, A. — Voyage of the ‘ Albatross’ 349 
Hudson, W. H . — Natural History of La Plata 350 
Lankester, E. Ray — Comparative Pathology of Inflammation 350 
B. INVERTEBRATA. 
Cuenot, L. — Phagocyte-organs of Invertebrates 350 
Griffiths, A. B . — Blood of Invertebrates 351 
„ „ Chemical Composition of Hxmocyanin 351 
Mollusca. 
Thiele, J . — Morphology of Mollusca 351 
a. Cephalopoda. 
Lacaze-Duthiers, H. de — Observations on a Living Argonaut 851 
Ballowitz, E. — Muscle-fibres of Cephalopoda 351 
