CONTENTS. IX 



PAGE 



Szillt, Aurel von — Amnion- Invagination in the Formation of Chick' 's Lens .. 284 



Salvi, Giunio — Pre- Oral Gut in Bird Emhry os 284 



Reese, Albert M. — Double Embryo of Florida Alligator 284 



Tur, J. J. — Dovble Embryo of a Lizard 284 



Yung, Emil — Giant Tadpoles 284 



Goggio, Empebocle — Development of Pancreas in Discoglossus pictus . . . . • 285 



Toknier, G. — Viviparous Frog 285 



Schultze, Oskar — Influence of Light on Pigmentation of Amphibian Ova and 



Larvse 285 



Borcea, I. — Urogenital System of Elasmobranchs 285 



Doncaster, L. — Inheritance of Coat- Colour in Rats .. .. 286 



Moore, B., & others — Effects of Alkalis and Acids on Developing Ova of Sea- 

 Urchin 421 



Whitley, E. — Effect of Acids and Alkalis on the Eggs of Plaice and Sea-Drchin . . 421 



Delage, Yves — Artificial Parthenogenesis 422 



Rubaschkin, W. — Maturation and Fertilisation in Porpoise 422 



Fischer, A. — Oolemma of Mammalian Ovum 422 



Fick, R. — Individuality of Chromosomes 422 



Dubuisson — Formation of Yolk in Egg of Sparrow 423 



W ilson, E. B., & R. Hektwig— New Theory of Sex- Production 423 



Wilson, E. B. — Sexual Differences of Chromosome Groups 424 



Hugounenq, L., & A. Morel — Formation of Hemoglobin in the Embryo .. .. 424 



Wintrebert, P. — Metamorphosis Independent of Nervous System 424 



Forel, A., & others — Sexual Selection 424 



Smith, G. — High and Low Dimorphism 425 



Lehmann, H. — Aortic Arches in Mammals 425 



Hartog, M. — Dual Force of the Dividing Cell 425 



Hurst, C. C, & W. F. R. Weldon — Inheritance of Coat Colour in Horses .. .. 535 



Castle, W. E., & A. Forbes — Heredity of Hair-length in Guinea-pig 536 



Castle, W. E. — Origin of Polydactylous Race of Guinea-pigs 536 



Wedekind, W. — Theory of Development 536 



Lewis, F. T. — Aortic Arches in Mammals .. 536 



Bradley, O. Charnock — Development of Sesamoid Bone 537 



Sainmont, G. — Structure and Development of Ovary and Testis of Cat 537 



Broek, A. J. P. van den — Development of Sex Structures in Marsupials .. .. 537 



Goodrich, E. S. — Development and Structure of Fins 538 



Henriksen. M. E. — Functional View of Development 538 



Schwalbe, E. — Text- Book of Teratology 538 



Martin, Jose Rioja y — Bull with a Supernumerary Limb 538 



Bender, O. — Hyper mely in the Frog 539 



Mehely, Ludwig v. — Origin of Supernumerary Limbs 539 



Sheurer, Cresswell — Cell Communications beticeen Blastomeres 539 



Adolphi, H. — Behaviour of Vertebrate Spermatozoa in Solutions 539 



Lane-Claypon, J. E., & E. H. Starling — Factors Determining Growth and Activity 



of Mammary Glands 539 



Barbieri, Ciro — Placenta of Tragulus 540 



Guhgek, E. W.— Breeding Habits of Pipe-Fish 540 



Allen, Bennet M. — Origin of Sex-Cells of Chrysemys 650 



Kostanecki, K. — History of Division Centres in Fertilisation 650 



Bataillon, E. — Impregnation and Fertilisation 651 



Eternod — Trophoblast of the Placenta 651 



Cohx, Ludwig — Absorption of the Yolk in Anguis fragilis 651 



Edwards, Charles L., & Clarence W, YLxwx—Gastrulation of Horned Toad .. 651 



Schaffnei:, J. H. — Terminology of Organs in Various Conditions of Development 652 



Adolphi, H. — Movements of Snake Spermatozoa 652 



FSbst, C. M. — Development of the Retina in the Salmon 652 



Bell, E. T. — Experimental Studies in Development of Eye and Nasal Cavity . . 653 



Stocsard, C. R. — Development of Thyroid in Bdellostoma stouti .. .< .. .. 653 



Froriep, R. — Primitive occipital vertebrsk 653 



Vries, Hugo de — Species and Varieties : their Origin by Mutation 654 



