CONTENTS. IX 



His, W. — LecithobJast and Angioblast in Vertebrates 255 



Burckhard, G. — Fixation of Egg in Mouse 256 



Weigner, K. — Development of Acusticofacial and Semilunar Ganglia 257 



Blanc, H. — Epiphysis and Paraphysis in Salamandra atra 257 



Hill, Charles — Two Epiphyses in a Four-Day Chick 257 



Rex, H. — Development of Eye-muscles in Duck 258 



Chomjakoff, M. — Development of Skull in Falconidx 258 



Harrison, H. Spencer — Dentition of Hatteria 258 



Martin, H. — Intermaxillary Tooth in Viper a asp is 259 



Helly, K. — Development of Pancreas in Mammals 259 



Semon, R. — Development of Excretory System in Dipnoi 259 



Bellesme, Jousset de — Reproduction of Salmon in Fresh Water 260 



Bataillon, E. — Teratogenic Influence of Saline and Saccharine Solutions .. .. 401 



Bonnet, R. — Is there Parthenogenesis in Vertebrata'l -101 



Wilcox, E. V. — Division of Chromosomes 401 



Eisen, Gustav — Spermatogenesis of Batraehoseps 402 



Peter, Karl — Differences in the Development of the same Ectodermic Structures .. 402 



Bataillon, E. — Development of Immature Ova of Rana fusca 403 



Minot, Charles Sedgwick — Somatopleure and Splanchnopleure 403 



Hill, J. P. — Female Urinogenital Organs of Marsupialia 403 



Krause, R. — Development of Ductus Endolymphaticus 404 



Fabre-Domergue & E. Bietrix — Artificial Rearing of Soles 404 



Schdltze, O. — Development and Significance of the Ora Serrata 404 



Loeb, Jacques — Artificial Parthenogenesis 500 



Vigdier, Camille — Parthenogenesis or Chemical Fertilisation 501 



Delage, \'ves & Marcel — Chemical Composition of Germ-Cells and that of Solu- 

 tions inducing Parthenogenesis 502 



Adami, J. G. — Heredity and Disease 502 



Beard, J. — Morphological Continuity of Germ-Cells in Skate 504 



Marshall, F. H. A. — QZslrous Cycle in Sheep and the Formation of the Corpus 



iuteum .. ... 505 



Kopsch, Fr. — Cleavage of Frog's Ovum 505 



Ebner, V. von — Division of Spermatocytes in Mammals 505 



Loisel, Glstave — Spermatogenesis in the Domestic Sparroio 506 



Selexka, E. — Uniformity of the Embryos of Primates 506 



Nussbaum, M. — Retrogressive Changes in Embryonic Primordia 506 



Economo, Constantin J. — Development of the Hypophysis in Birds 507 



Yoeltzkow, A. — Development of Crocodilus madagascariensis 507 



Peter, K. — Visceral Clefts of Lacerta 507 



Glas, Emil — Development of Spleen in Tropidonotus Natrix 508 



Kohlbrugge, J. H. F. — Development of Egg in Mabuia multifasciata 50S 



Voeltzkow, A. — Germ-layers of Podocnemis madagascariensis 508 



„ „ & L. Doderlein — Abdominal Ribs in Reptiles 509 



Gerhardt, U. — Development of the Permanent Kidney in Amniota 509 



Wendelstadt, H. — Regeneration of Bone in Urodela 509 



Fox, H. — Tympano-Eustachian Passage in the Toad 509 



Gemmill, J. F. — Symmetrical Double Monstrosities in the Trout 510 



Wilson, Cregg — Development of Ceratodus 510 



Delage, Yves — Discovery of Merogony 630 



„ „ Cytoplasmic Maturation and Experimentally Induced Partheno- 630 



genesis 631 



Nussbatjm, M. — Origin of Germ-cells in Chick Embryo 316 



Hammar, J. AcG. — Structure of Embryonic Bone-marrow 631 



Gronberg, Gosta — Brain of Erinaceus 631 



Schoenfeld, H. — Mammalian Spermatogenesis 631 



Godlewski, E. — Development of Striped Muscle 632 



Adloff, P. — Development of Teeth in Sus scrofa 632 



Tims, H. W. Makett — Tooth-genesis in the Caviidse 632 



Korff, K. v. — V-shaped Centrosomes 633 



Rex, H. — Cephalic Mesobl a st in Lar us ridibundus 633 



Kuleztcki, Wlodzimierz — Development of Shoulder- Girdle in Birds 633 



Peter, Karl — Development of Nostrils in Lizard 633 



