CONTENTS. IX 



PAGE 



OwsiANNiKOW, P. — Egijs of Bony Fishes Part 3 402 



Agassjz, A.~ Pelagic Stages of Yoimg Fishes „ 402 



Conn, H. \V. — A Suggestion from modem Embryology , 403 



Dixon, C — ■Evohction icithout Natural Selection „ 403 



DtJSlNG, C. — Experimental Testing of the Theory of the Begukition of the 



Eelation of the Sexes „ 404 



Benda, C. — Spermatogenesis in Mammals .. , = Part 4 574 



H ADDON, A. C. — Blastodermic Vesicle in Mammals ,, 574 



Krukenberg, C. F. W. — Horny Investments of the Eggs of Scyllium 



stellare - „ 575 



Will, L. — Oogenetic Studies Part 5 764 



Ihering, H. v. — Embryology of Armadillos „ 765 



Charbonnel-Salle & Phisalix — Fost-emhryonic Development of Vitel- 

 line Sac of Birds , 765 



Ihering, H. v., & G. A. Boxtlenger — Oviposition in Phyllomedusa .. „ 766 

 JtJNG, E. — Influence of Variations inthe Physico-Chemical Medium on the 



Development of Animals „ 766 



Prince, E. E. — Development of Food-Fishes , 767 



Barfurth, D. — Biology of the Trout , 768 



Eomanes, G. J., & "F. J. B." — Physiological Selection „ 769 



Frenzel, J. — fd'oplasm and Nuclear Substance Part 6 934 



La Valette St. George, v. — Spermatogenesis in Amphibians .. .. „ 935 



KoLLMANN, J. — History of the Primitive Streak „ 935 



Mttsukuri, K., & C. ISHIEAWA — Germinal Layers of Chelonia .. .. „ 936 



Prince, E. E. — Oleaginous Spheres in the Ova of Tcleostean Fishes .. „ 937 



Selenka, E. — Embryology of the Opossum „ 937 



Klee, E. — Structure and Development of Feathers „ 937 



Dareste, C. — Monstrosities in the Egg of the Cilick „ 939 



Born, G. — Influence of Gravity on the Frog Ovum „ 939 



Perenti, J. V. — Embryology of Torpedo marmorata „ 940 



Cunningham, J. T. — Reproductive Elements of Myxine glutinosa .. .. ,, 941 



Ryder, J . A. — Development of Fundulus heteroclitus „ 941 



,, „ Development of the Mud-minnow „ 941 



Cunningham, J. T. — 3Iode of attachment of the Ovum of Osmerus 



eperlanus ,, 942 



ZiEGLER, H. E. — Origin of Blood-corpuscles in Teleostean Embryos .. ., 942 



Hyatt, A. — Larval Theory of the Origin of Tissue „ 943 



Rous, W. — Mechanics of Development „ 943 



/3. Histology. 



Pfitzner, W. — Morphology of the Cell-nucleus Part 1 47 



Laulanie, F. — Contraction of Striped Muscle ,. 47 



Leydig, F. — Cells of the Epidermis of Batrachian Larvx Part 2 214 



ViRCHOW, H. — Cells of the Vitreous Body „ 215 



NissEN, F. — Nuclei of Secreting Milk-gland Cells- „ 215 



Platner, G. — Accessory Nuclear Body .. „ 216 



Gage, S. H. & S. P. — Amoeboid Movement of Cell-nucleus „ 217 



List, J. H. — Unicellular Glands in the Epithelium of Bladder of 



Amphibians ,, 217 



IMaCALLUSI, a. 'Q.^Nerve-tcrminations in the Cutaneous Epithelium of 



the Tadpole „ 218 



