CONTENTS. 
Transactions of the Society — 
FAGS 
III. — The Foraminifera of the Gault of Folkestone. — Y. By 
Frederick Chapman, F.R.M.S. (Plates III. and IY.) .. 153 
IY. — An Inexpensive Screen for Monochromatic Light. By 
J. William Gifford, F.R.M.S. (Plate Y.) 164 
V. — On Fuoitrogus Rhodymeni^, a Gall-producing Copepod. 
By G. S. Brady, M.D., LL.D., F.R.S. (Plate Y.) .. .. 168 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
A. VERTEBRATA : — Embryology, Histology, and General, 
a. Embryology. 
Hertwig, O . — 'Experimental Embryology 171 
Bos, Ritzema — Breeding in and in .. 172 
Haacke, W . — Origin of Mammals .. .. .. 172 
Leche, W . — Dentition of Mammals 173 
Sobotta, J . — Fertilization in the Mouse 174 
Reiohel, P . — Development of Bladder and Urethra 174 
Gaupp, E . — Development of the Hypophysis 174 
Hoffmann, C. K . — Origin of the Blood 175 
Pollard, H. B . — Development of Head of Gobius Capita 175 
Mitrophanow, P . — Embryogeny of Selachii 175 
Locy, W. A . — Derivation of the Pineal Eye 176 
Hasse, C . — Development of the Vertebral Column 176 
Minot, 0. S . — Concerning the Gonotome 176 
Reh, L . — Inheritance of Acquired Characters 176 
£. Histology. 
Rath, O. vom — Spermatogenesis in Salamandra maculosa 177 
Hacker, V . — Import of the Chief Nucleolus .. 178 
Hardy, W. B., & Lim Boon Keng — Changes induced by Urari in the Wandering 
Cells of the Frog 178 
y. General. 
Pictet, R . — Influence of Low Temperature 178 
Werner, F . — Phenomena of Convergence 179 
Mollusca. 
y. Gastropoda. 
Bergh, R . — Doridiidse 179 
„ „ The Genus Gastropteron .. 180 
Ihering, H. von — Morphology of Sacoghssa 180 
Pelseneer, P . — Excretory and Reproductive Apparatus of Elysia 180 
Boutan, L . — Nervous System of Nerita and Navicella 181 
Pelseneer, P . — Shell Cavity of Philinidse 182 
Girod, P . — Kidney of Snail 182 
Bergh, R . — New Polycerad 182 
Sterki, V . — Growth Changes of Radula in Land Mollusca 182 
Looard — Mollusca of Water Mains of Paris 182 
Cockerell, T. D. A., & W. E. Collings— Check-List of Slugs 183 
Molluscoida. 
o. Tunicata. 
Metcalf, M. M . — Eyes and Subneural Gland of Salpa 183 
Apstein, C —Salpse of Berlin Museum 183 
Traustedt, M., & W. Weltner — Tunicata collected by Dr. Sander 183 
A Bryozoa. 
Protjho, H., & E. Ehlers — Contributions to our Knowledge of Polyzoa 183 
Dcerden, J. E . — New and Rare Irish Polyzoa 185 
