MAR 16 1896 
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CONTENTS. 
TRANSACTIONS OF THE SOCIETY. 
PAGE 
X. — The Foraminifera of the Gault of Folkestone. — VIII. By 
Frederick Chapman, F.K.M.S. (Plates I. and II.) .. .. 1 
II. — The President’s Address : Sketches from the Anatomy of 
the Acarina. By A. D. Michael, F.L.S., &e. .. .. ,. 15 
SUMMARY OF CURRENT RESEARCHES 
ZOOLOGY. 
YERTEBKATA. 
a. Embryology. 
Rohde, F . — Present State of the Question as to the 0: igin and Inheritance of 
Acquired Characters 27 
Minot, -C . — Heredity and Rejuvenescence 28 
Herbst, Cukt — Formative Stimuli in Development . 29 
■Wagner, F. v. — Hertwig's Theory <f Development *. 2!) 
Ryder. J. A . — Dynamical Hypothesis of Inheritance .. .. 30 
Sedgwick, A . — Further Remarks on the Cell-Theory 32 
Nussbaum — Progressive Differentiation of Cells in the Course of Development .. .. 32 
Sewertzoff, A . — Metamerism of Vertebrate Head 32 
Debierre, Gh . — Development of the Occipital Segment 33 
Giacomini, C . — Abnormalities in Human Development 33 
Leo he, W . — Dentition of Mammals 33 
„ Questions concerning Dentition .. .. 34 
Woodward, M. F . — Development of Teeth in Insectivora 34 
Laguesse, E . — Histogenesis of the Pancreas 35 
Keibel — Development of Bladder and Urinogenital Sinus .. .. .. 35 
Duval, M . — Embryology of Rats 35 
Nqlf, P . — Gestation of Vespertilio murinus 36 
Hill, J. P., & C. J. Martin — Embryo of Platypus 37 
Nathusius, W. von — A Strange Enclosure in a Hen's Egg 37 
Mehnekt, E . — Gastrulation in Reptiles 37 
Noetzel, W . — Degeneration of Tissue in Tadpole's Tail 37 
Kopsch, F . — Gastrulation in Axolotl and Frog 38 
Raffaele, F . — Superficial Epidermic Envelope in the Developing Ova of Teleosteans 38 
Felix — Excretory System of the Trout 39 
Virchow, Hs . — The Blastodermic Margin in Scdmoniddc 39 
Sobotta, J . — Fertilisation of Egg of Amphioxus lanceolatus 39 
Alcoce, A . — New Species of Viviparous Fish 40 
Beard, J . — Phenomena of Reproduction 40 
Moore, J. E. S — Spermatogenesis in Birds 4t 
Rath, O. vqm — Chromatin-Reduction in the Maturation of Ova and Spermatozoa 41 
Moore, J. E. S . — Structural Changes in Reproductive Cells of Elasmobranchs .. 42 
{}. Histology. 
Lenhossek, M. v . — Centrosome and Sphere in the Spinal Ganglion-Cells of the Frog 43 
Rath, O. vom — Amitosis 44 
Dogiel, A. S . — Sympathetic Ganglia of Mammals .. .. 44 
Ni-essing, G. — Cell-Studies .. 44 
Cesaris-Demel, A. — Fat-formation and Altmann’s Granules 45 
Preiswerk, G . — Enamel Structure and Phytogeny .. .. ,. 45 
A 
