CONTENTS. 
Transactions of the Society — 
PAGK 
I. — On an Endophytic Parasite of Diatoms. By Charles Haughton 
Gill, F.R.M.S., F.O.S. (Plate I.) .. 1 
II. — The Chromatic Curves of Microscope Objectives. By E. M. 
Nelson, F.R.M.S. (Fig. 1) 5 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
A. VERTEBRATA : — Embryology, Histology, and General. 
a. Embryology. 
Kolliker, A . — Development of Elements of Nervous System 18 
Assheton, R . — Development of Optic Nerves of Vertebrates 19 
Vialleton, L . — Origin of Vascular Germs in the Cliich 20 
G oronowitsch, N . — Axial and Lateral Metamerism of the Head in Embryos of Birds 20 
Born, G . — Maturation of Amphibian Ova and Fertilization of Immature Ova of 
Triton 21 
Fick, R . — Fertilization of Axolotl Ovum 21 
Roudnev, Y . — Development of Endothelium of Heart of Amphibia 21 
Wilson, E. B . — Multiple and Partial Development in Amphioxus 21 
Rose, C . — Phytogeny of Mammalian Teeth 22 
Osborn, H. F . — History and Homologies of Human Molar Cusps 22 
Rose, C . — Rudiments of Teeth in Manis .. .. 23 
„ „ Dentition of Marsupials .. .. 23 
„ „ Dental Ridge and “ Egg-teeth” in Sauropsida 23 
M'Intosh, W. C. — Li f e-history and Development of Food and other Fishes .. .. 24 
Calderwood, W. L . — Ovary and Intra-Ovarian Egg of Teleosteans 24 
Holt, E. W. L . — Eggs and Early Stages of Rhombus maximus 24 
jS. Histology. 
Flemming, W.— Invisibility of Living Nuclear Structures 2 
Vas, F . — Chromatin of Sympathetic Ganglia 2 
Dekhuysen, M. C . — Blood of Amphibia 2. 
G ehuchten, A. Van — Cerebro-Spinal Ganglia 2 r 
Notthafft, A . — Degeneration and Regeneration of Injured Peripheral Nerves .. 2t 
Geiiuchten, A. Van — Free Intra-epidermic Nerve-endings 2( 
Golgi’s Method and the Distribution of Nerve-fibres 27 
y. General. 
Holt, E. W. L . — Survey of Fishing Grounds , West Coast of Ireland 27 
Bles, E. J . — Plankton of Plymouth .. .. .. .. 27 
GaRoTang, W . — Marine Invertebrate Fauna of Plymouth 28 
Cosmovici, L. C. — Excretory System of Animals 29 
Driesch, Hs . — Studies in Developmental Mechanics < 29 
B. INVERTEBRATA. 
Mollusca. 
y. Gastropoda. 
Villepoix, R. Moynier de— Repair of Shell of Helix aspersa 30 
Woodward, B. B. — Growth and Structure of Shell in Velates conoideus and other 
Neritidx 30 
Scharff, R. F. — Slugs of Ireland 30 
Plate, L. H. — Structure and Relationships of the Solenoconcha 31 
Molluscoida. 
a. Tunicata. 
Oka, A . — Budding of Botryllus 
31 
