CONTENTS. IX 



PAGE 



Camerano, L. — Distribution of Colour in the Animal Kingdom .. . . Part 1 37 



Gbabee, V. — Sense of Colour and of Brightness in Animals „ 38 



Hunt, A. R. — Influence of Wave-currents on Fauna of Shallow Seas ,. „ 38 



Claus' (C.) Elementary Text-book of Zoology „ 38 



SCHIMKEWITSCH, "W". — Development of the Heart in Vertebrates and 



Invertebrates Part 2 212 



Steahl, H. — Fmbryology of lacerta viridis „ 212 



Heetwig, O. — Spindle-shaped Bodies in the Folk of Young Gva of Frogs „ 213 



Eydee, J. A. — Development of the Bays of Osseous Fishes „ 213 



Beook, G. — Origin of the Hypoblast in Pelagic Teleostean Ova .. .. „ 214 

 DiJsiNG, K. — Regulation of the Proportion of the Sexes in Man, Aninuds, 



and Plants „ 214 



ScHLECHTEE, J., & H. Beenee — Causes of Sex „ 215 



Beooks, W. K. — New Law of Variation „ 216 



Kabl, C. — Cell-division „ 217 



LowiT, M. — Formation of Bed and White Blood-corpuscles „ 220 



List, J. H. — Unicellular Glands in the Cloaca of Bays „ 221 



Miteophanow, p. — Intercellular Spaces and Bridges in Epithelium . . „ 221 



MuLLENHOFF, K. — Size of the Surfaces of Organs of Flight „ 221 



Heedman, W. A. — Phylogenetic Classification of Animals ,, 221 



LoEW, 0. — Protoplasm and its Bowers of Besistance Part 3 421 



Heetwig, O. — Problem of Fertilization and of the Isotropy of the Ovum „ 421 

 Kaubee & Sachsse. — Influence of external conditions on the development 



of Ova „ 423 



Beneden, E. van, & C. JuLiJf. — Fcetal Appendages of Mammals .. .. „ 423 

 SoLGEB, B. — Development of the Ccelom and Ccelomic Epithelium of 



Amphibia ^^ 423 



Spencee, W. B. — Fate of the Blastopore of Bana temporaria .. . , „ 425 



Henneguy, L. F. — Primitive Streak in Osseous Fishes ,, 425 



Peeeavex, E. — Formation of Egg-shell in Dogfish , 425 



FoL, H. — Cell-continuity 42Q 



Heetwig, O. — Influence of G-ravity on Cell-division , 426 



Hackel, E. — Origin and Development of Animal Tissues , 426 



Adamkiewicz, a. — Parietal Cells in Nerve-fihres ,, 428 



WoOLDEiDGE, L, C. — New Constituent of the Blood and its Physiological 



Import J, 428 



NiKOLAiDES, R. — Phenomena of Contraction in Striated Muscle .. .. „ 428 

 Lewis, W. J. — Hair Microscopically examined and Medico-legally con- 

 sidered ^j 429 



MacMtjnn, C. A. — New Organic Spectra ^^ 429 



Shaep, B. — Homologies of the Vertebrate Crystalline Lens ^^ 430 



Beooks, W. K. — Recognition by Marine Animals of the Hour of the Day „ 431 



Claus' (C.) Elementary Text-book of Zoology ,, 431 



Laulaxne, F. — Unity of the Process of Spermatogenesis in Mammalia . . Part 4 615 



IhJVAL, M. — Formation of the Blastoderm in the Bird's Egg 615 



Daeeste, 0. — Physiological Purpose of Turning the Incubating Hen's 



^ggs „ 617 



Laschenbeeg, O. — Colours of Birds' Eggs , 618 



Saeasin, P. B. & C. F. — Development of Epicrium „ 618 



Eydee, J. A. — Translocation forwards of the Rudiments of the Pelvic 



Fins in the Embryos of Physoclist Fishes 618 



