CONTENTS. 



Tbansaotions of the Society — pao« 



V. — The President's Addeess. By the Eev. W, H. Dallinger, 



LL.D., F.K.S., F.L.S., &c. (Plate VI. and Figs. 31-33.) .. 185 



VI. On Cutting Sections of Sponges and other similar structures 



WITH SOFT AND HARD TISSUES. By Dr. H. J. Johnston-Lavis, 

 F.G.S., and Dr. G. C. J. Vosmaer. (Fig. 34) .. ..200 



VII.— On the Differentiation of Tissues in Fungi. By George 



Massee, F.R.M.S. (Plate VII.) 205 



SUMMARY OF CTJItRENT RESEARCHES. 



ZOOLOGY. 

 A. VERTEBRATA :— Embryology, Histology, and General, 

 o. Embryolo&y. 



Wolff, W. — Germinal Layers .. _ 209 



KoLLiKER, A. — Karyoplasm and Inheritance 209 



LatjLanie, F. — Development and Significance of the Germinal Epithelium in the 



Testicle of the Chich 210 



Bakfurth, D. — Conditions of Tadpole Metamorphosis 210 



„ „ Absorption of the Tadpole's Tail 211 



Scharff, E. — Intra-ovarian Egg in Osseous Fishes 211 



Henxeguy, L. F. — Growth of Embryos of Osseous Fishes 211 



Shiplet, A. E. — Development of Petromyzon fluviatilis 212 



VoGT, C. — Some Darwinistic Heresies 212 



/5. Histology. 



List, J. H. — Gohlet-celh in Amphibian Bladder 213 



Fbitsch — Nerves of Electric Fishes 213 



7- General. 

 TS-XS^BALh & B-VRBt's Practical Zoology 213 



B. INVERTEBRATA. 



B.KtLER,B.— Dotted Substance of Leydig 214 



MacMunn, C. A. — Eiiterochlorophyll and Allied Pigments 214 



„ Myohmmatin and the Histokssmafins 214 



Certes, A., & Gabrigod — Micro-organisms in Thermal Water 214 



Po2ta P r—Fostil CaUareom Elements of Alcyo^mria and Holothurioida 215 



MoUusca. 



Fbenzel, J. — Histology of the Mollusc Liver 215 



Bruce, A. T. — Early Development of Loligo 216 



HoTLE, W. E. — ' Challenger' Cephalopoda 216 



Pelseneeb, p. — New Gymnosomafous Pteropod 217 



McMuRBicH, J. P. — Embryology of Prosobranch Gasteropoda 217 



'BQj:\YER,^.'L.^Typical Nervous System of Prosobranchs .. .. 218 



Marion & Kowaletsky — Lepidomenia hystrix 218 



Watson, A. B., & DE FoLiN — "^ Challenger ^ Scaphopoda and Gastropoda 219 



Bebgh, R.— ' CTiaHenger ' Mar«em7d« 219 



Haddon, H. C. — ' Challenger' Polyplacopliora 219 



Thiele, J. — Mouth-lobes of Lamellibranchs 220 



BviscaiA, O.—Morphology of Eye of Pectens 220 



Ybiele^ B..-~North Sea MoUusca 221 



Molluscoida. 



a. Tunicata. 



Brooks, W.E. — The Salpa-chain 221 



GiARD, A. — Synascidians netc to the French Coast 221 



