CONTENTS. IX 



PAGE 



Reese, Albert M. — Development of Enteron in American Alligator 187 



Wunderer, Hans — Development of Alpine Salamander 187 



Lissitsky, Eugen — Production of Supernumerary Limbs in Amphibians 187 



Reis, Caroline — Development of Teleosts .. .. 187 



Bolk, L. — Development of Pigment-cells in Teleostean Embryos 187 



McIlroy, A. Louise — Oogenesis in Mammals 344 



Sieglbauee, F. — Development of the Extremities in Birds 345 



Rosenberg, F. T. — Development of the Limbs in Grebes 345 



Mietens, H. — Origin of White Blood-corpuscles and Spleen in Bufo vulgaris .. 346 

 Stromsten, Frank A. — Structure and Development of Posterior Lymph-hearts of 



Turtles 346 



Goodale, H. W. — Blastopore Closure in Amphibia 347 



Brownlee, J. — Inheritance of Complex Growth-forms 347 



Regaud, Cl., & Th. Nogier — Castration by X-rays 347 



Th. Nogier & Cl. Regaud— Sterilization by X-rays 347 



Mazzetti, L. — Interstitial Testicular Cells and Secondary Sex Characters .. . . 348 



Smith, Geoffrey — Injection of Testis-extract into Hens 348 



Warren, Ernest — Mammalian Sports 348 



Punnett, R. C. — Mendelism 453 



Plate, L. — Heredity and Evolution 453 



Bataillon, E. — Experimentally Induced Parthenogenesis in Toad 454 



„ Artificial Parthenogenesis of Toad's Egg 454 



„ „ Artificial Parthenogenesis in Toad 454 



Dehorne, A. — Number of Chromosomes in Parthenogenetically produced Larvse of 



the Frog 454 



Romieu, M. — Plasmic Reduction in Spermatogenesis 454 



Doncaster, L., & F. H. A. Marshall — Effects of One-sided Ovariotomy on Sex of 



Offspring 454 



Hickson, Sydney J. — Origin of Sex 454 



Iwanoff, E. — Fertility of Hybrids of American and European Bison 455 



Chappelier, A. — State of Ovary in Hybrids of Goldfinch and Canary 455 



Bonhote, J. Lewis — Webfoot Character in Pigeons 455 



Gaskell, J. F. — Action of X-rays on Developing Chick 455 



Stromsten, F. A. — Lymph-hearts of Turtles 455 



Goodrich, E. S. — Occipital Region of Vrodela 456 



Jorgensen, Max — Ovarian Ovum of Proteus 456 



Kusch akewitsch. Sergius — Development of Gonads in Frog 456 



Marcus, Harry — Development of Head in Hypogeophis 456 



Makuschok, M. — Development and Evolution of Lungs 457 



Arldt, Th. — Evolution-centres 457 



Schaffer, J. — Post-natal Remains of the Notochord in Mammals 603 



Athias, M. — Maturation of the Mammalian Ovum 603 



Sobotta, J. — Early Development of White Mouse 603 



Bluntschli, H. — Teeth of Two Dentitions in a Dermoid Cyst 604 



Poll, Heinrich — Ovary in Hybrid Birds 604 



Smith, Geoffrey — Fluctuations in Growth of Fold's Comb 604 



Kunkel, B. VV. — Development of Turtle Skull 605 



Kuntz, A. — Sympathetic Nervous System in Turtles 605 



„ ,, Sympathetic Nervous System in Fishes 606 



Kopsch, Fr.— Early Development of Trout 607 



Heronimus, Ch. — Development of Pectoral Fin in Amia 607 



Agar, W. E. — Spermatogenesis of Lepidosiren 608 



Broesike, G. — Nature of Seminal Fluid in Man 608 



Daniel, J. Frank— Gestation in White Mice 737 



Bataillon, E. — Factors of Traumatic Parthenogenesis 737 



Berger, A. — Alleged Lactation of Male Lepusbairdii 737 



Bonhote, J. Lewis, & F. W. Sm alley — Colour Inheritance in Pigeons 738 



Peebles, Florence — Interchange of Limbs of Chick by Transplantation 738 



Bianco, Salvatore Lo — Influence of Environment on Reproductive Period .. .. 738 



Wintrebert, P. — Involution of Tail in Alytes obstetricans 738 



Dakin, W. J. — Physiology of Fish-eggs and Larvse 738 



Williamson, H. Chas. — Retarding Development of Herring's Eggs 739 



