MAY 7 18SP 
CONTENTS. 
TRANSACTIONS OF THE SOCIETY. 
PAGE 
II. — The President’s Address. By Edward M. Nelson (Figs. 14-23) 149 
III. — The Application of the Electric Arc to Photomicro- 
graphy. By J. Edwin Barnard, F.B.M.S., and Thos. 
A. B. Carver, B.Sc. (Figs. 24-27) 170 
IV. — A new Form of Photomicrographic Camera and Condensing 
System. By E. B. Stringer, B.A. (Fig. 28) ... .. .. 174 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
VERTEBRATA. 
a. Embryology. 
Hill, J. P . — Placentation of Perameles 180 
MaoBride, E. W . — Early Development of Amphioxus 181 
Lankester, E. Ray — Development of Atrial Chamber in Amphioxus 181 
Bugnion, E . — Development of Epiphysis in Reptiles 182 
Andrews, E. A . — Some Activities of Polar Bodies .. 182 
Hatta, S . — Pronephros of Lamprey 182 
Kopsch, Fr. — Egg-laying of Dog-fish 182 
# Merkel, Fr . — Formative Forces . .. 183 
b. Histology. 
Hoehl, E . — Intercellular Bridges in Muscle 183 
Querton, Louis — Cell Membranes 183 
Schlater, G . — Minute Structure of the Liver-Cell 183 
Bischoff, C. W . — Influence of Cutting on the Growth of Hair 18 t 
Ranvier, L . — Regeneration of Descemet's Membrane 184 
Malischeff, N. — Nerve-Endings in (Esophagus and Stomach of Birds 184 
Herrera, A. L . — Molecular Attraction in Vital Phenomena 184 
c. General. 
Parker, T. Jeffery, & William A. Haswell — Text-Book of Zoology 184 
Ortmann, A. E . — Germinal Variation 184 
MacBride, E. W . — Relationship of Amphioxus and Balanoglossus 185 
Nakagawu, H . — A Japanese Amphioxus 185 
Boulenger, G. A . — Tailless Batrachians of Europe 185 
Fischer-Sigwart, H . — Habits and Life-History of Frog 185 
Reynaud, G . — Sense of Direction 18G 
Bles, E. J . — Openings in the Wall of the Body-Cavity in Vertebrates 18G 
Moore, B., & Swale Vincent - Suprarenal Bodies 18G 
Huot — Suprarenal Capsules in Lophobranch Fishes .. .. 186 
Haldane, J. S. — Air-Bladder of Fishes 187 
Phisalix, C. — Hornet's Venom antagoni ze to Viper's 188 
A 
