CONTENTS. 
XI 
PAGK 
Eigenmann, C. H . — Origin of Cave Faunas 273 
Moenkhaus, W. T. — Variation in Fishes 273 
Williams, EL S . — Variation versus Heredity .. 274 
Engel, C. S . — Development of Blood-corpuscles 379 
Grobben. Karl — Development of Spermatozoa 379 
Moller, Friedrich von — Origin of Vasa efferentia in Tortoises 380 
Forssell, Gosta — LorenzinVs Ampullae in Acanthias vulgaris 389 
Pearson, Karl — Reproductive or Genetic Selection - .. 380 
Weismann, August — Regeneration 381 
Przibram, Hans — Regeneration in Crustacea 382 
Yung, Emile — Variations in the Plankton of Lake Geneva 382 
Zacharias, O . — Lake and Pond 382 
Burckhardt, G . — Plankton of Swiss Lakes 383 
Lo Bianco, S . — Period of Sexual Maturity in Marine Animals 383 
Alley, E. J . — Relation of Fauna to Bottom- Deposits 383 
Mummery, J. H .— Teeth of Fish 383 
Kingsley, J. S., & W. H. Kuddick — Ancestry of Mammals 384 
Grijs, P. De — Colour-Change in Lizards . . 384 
Mathews, Albert — Physiology of Secretion 384 
McMurrich, J. Playfair — Present Status of Anatomy 385 
Webek, Max — Origin of Fauna of Celebes 475 
Oktmann, A. E. — Bipolarity of Marine Faunas 475 
Weiss, F. E. — What is Life ? 475 
Sokolowsky, A . — Evolution of Scales of Lizards . . 476 
Overton, E . — Osmotic Peculiarities of Cells 476 
Kaspail, Xavier — Sense of Smell in Birds . . . . 477 
Lee, F. S . — Ear and Lateral Line in Fishes 477 
Newbigin, Marion I . — Affinities of Enterochromes 477 
Schumacher, Y . — Functions of Lymplt-glands in Vertebrates 477 
Nordenskiold, E. — xY eomylodon 478 
Smith, G. Elliot — Position of Edentata 473 
Sixta, Y . — Affinities of Ornithorliynchus 478 
Zehnder, Ludwig — Origin of Life 582 
Hokmann, Georg — Chemistry of Life 582 
Beeton, M., & K. Pearson — Inheritance of Longevity 582 
Burdon-Sandekson, J . — Electric Phenomena associated with Motion in Animals 
and Plants 583 
Thilo, Otto — Clamping Mechanisms in Animals 583 
Ying, E . — Digestion in Dogfish 583 
Abelous, E., & E. Gerard — A Reducing Animal Ferment 583 
Phisalix, C . — Echidnase 583 
Camus, L., & E. Gley — Cellular Immunity 584 
Beclere & others — Vaccinal Immunity acquired by the Foetus 584 
Nusbaum, J., & S. Sidoriak — Connection between Ear and Swim- Bladder in Cobitis 
fvssilis 585 
Palacky, J . — Distribution of Lizards 585 
Tornier, Gustav — Lizard with Suctorial Tail 585 
Hochstetter, 4 ’. — Origin of the Diaphragm 585 
Ward, H. B. — Fresli-water Investigations 585 
Aurivillius, C. W. S . — Fauna of the Swedish West Coast 586 
Zimmer, C .— Plankton of the Oder 586 
Tunicata. 
Piz >n, Antoine — Life of a Tunicate Colony 26 
Crampton, H. E., Jun. — The Ascidian Half-Embryo 153 
Loiimann, H — Appendiculariidas of the Straits of Messina 385 
Damas, D . — Epicurdium in Ciona intestinalis 385 
Pizon, Antoine — Coloration of Tunicates 586 
Metcalf, M. M . — Alleged Otocysts of Salpidx 587 
Schultze, L. S . — Regeneration and the Germ-layer Theory 587 
