CONTENTS. 
Transactions of the Society — PAGB 
X.— Heterosporium Asperatum (Berk.) Mass., a‘ Parasitic Fungus. 
By George Massee. (Plate VIII.) 577 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
A. VERTEBRATA : — Embryology, Histology, and General. 
a. Embryology. 
Waters, B. H . — Primitive Segmentation of Vertebrate Brain 585 
Hertwig, O. — “ Urmund ” and Spina bifida 585 
Kollmann, J . — Embryos of Apes 586 
Ziegler, F . — Surface Views of Frog Embryos 587 
Dehner, H . — Alleged Parthenogenesis of Frog Ova 587 
Sewertzoff, A. N . — Segmentation of Cephalic Mesoderm in Pelobates fuscus.. .. 587 
Sedgwick, A . — Development of Elasmobranchs 587 
Alcock, A. — Vtero-gestation in Trygon Bleekeri 588 
„ „ Embryonic History of Pteroplatxa micrura .. .. 588 
Boyer, E. R . — Mesoderm of Teleostean Fishes . . 589 
Hatta, S . — Formation of Germinal Layers of Petromyzon .. .. .. 589 
Stricht, O. Van der — Development of Blood-corpuscles 589 
Macallum, A. B . — Studies on the Blood of Amphibia 591 
Kukenthal, W . — Origin and Evolution of Mammalian Teeth 591 
Freund, P . — Development of Rodent Teeth .. .. 592 
Giard, A . — Pcecilogony 592 
j3. Histology. 
Chatin, J . — The Animal Cell 593 
Burger, O . — Attraction Spheres and Central Bodies 593 
Muller, H. F . — Relation of Nucleus to Cell-substance during Mitosis .. .. .. 593 
y. General. 
Gogorza y Gonzalez, Jose — Influence of Fresh Water on Marine Animals . . . . 593 
Retzius, G .— Central Nervous System of Lower Animals 591 
Tylden, H. J . — Bearing of Pathology on Doctrine of Transmission of Acquired 
Characters 595 
B. INVERTEBRATA. 
Mollusca. 
o. Cephalopoda. 
Rawitz, B . — Minute Structure of Posterior Salivary Glands in Cephalopoda .. .. 595 
y. Gastropoda. 
Pilsbry, H. A . — Anatomy of some American Molluscs .. 595 
Willem, O. — Vision of Gastropoda 596 
Fischer, H . — Morphology of Liver of Gastropoda 596 
Cuenot, L . — Excretion in Pulmonate Gastropoda 597 
R. v. Erlanger — Paired Nephridia of Prosobranchs .. .. .. .. 598 
Griffiths, A. B . — Colourless Globulin in Patella 598 
Cuenot, L . — Respiratory Value of Hsemocyanin to Helix pomatia 598 
Herdman, W. A., & J. A. Clubb — Cerata of Nudibranchs . . .. .. .. .. .. 598 
Prtjyot, G . — Development of Proneomenia 599 
Arthropoda. 
a. Insecta. 
Packard, A. S . — Larva of Lagoa 599 
Cholodkovsky, N . — The Aphides of Conifer m 600 
Brauer, F . — African (Estridse 600 
