viii CONTENTS. 



PAGE 



Jensen, O. S. — Spermatogenesis Parti 1G 



JANOSIK, J. — Two Young /finnan Embryos „ 16 



GEELAOH, L. — Experimental Embryology „ 16 



lii i.i.onci, G. — Polar Globule of Mammalian Ovum Part 2 186 



Hvdeu, J. A., & G. Fetteeol — Vestiges of Zonary Decidua in Mouse .. „ 186 



IIskow, N. — Development of Blood-vascular System of the Chick „ 187 



BASWELL, W. A. — Development of Emu „ 187 



Sohanz, F. — Fate of the Blastopore in Amphibians „ 189 



Flemming, W. — Spermatogenesis of Salamander „ 189 



Brook, G. — Germinal Layers in Teleostei „ 189 



Fcsaki, R. — Segmentation of Teleostean Ova „ 191 



CUNNINGHAM, J. T. — Eggs and Larvse of Teleosteans „ 191 



Ziegler, H. E. — Origin of Blood in Teleostei „ 192 



Cunningham, J. T. — Ova of Bdellostoma „ 192 



Makcacci, A. — Influence of Movement on Developing Eggs „ 193 



Hatschek, B. — Si 'gnificance of Sexual Reproduction „ 193 



Detmer, W. — Inheritance of Acquired Characters „ 193 



"Wiedersheim, R. — Ancestry of Man „ 193 



WsiSMANN, A. — Degeneration „ 194 



FrjBST, C. M. — Spermatogenesis of Marsupials Part 3 386 



Mall, F. P.— First Branchial Cleft of Chick 387 



Beneden, E. van — Attachment of the Blastocyst to the Uterine Wall in 



the Bat „ 387 



Orr, II. — Embryology of Anolis „ 387 



Scott, W. B. — Development of Petromyzon „ 388 



Swaen, A. — Development of Torpedo ocellata „ 389 



Whitman, C. O. — Kinetic Phenomena of the Egg during Maturation and 



Fecundation Parti 546 



Nagel, W. — Human Ovum „ 547 



Ebner, V. v. — Spermatogenesis of Mammals „ 547 



ORR, H. — Embryology of Lizard „ 548 



Schwinck — Gastrula of Amphibians „ 549 



Goette, A. — Development of Petromyzon fluviatilis „ 549 



Giitel, F. — Egg-shell of Lepadogaster ,, 550 



Corin, G., & E. Beraed — Albuminoid Constituents of White of Egg .. .. „ 551 



Liebermann, L. — Embryochei ideal Lnvesiigations ,, 551 



Weismann, A., & C. Isciiiea'wa — Formation of Polar Globules in Animal 



Ova Part 5 705 



Hoffmann, C. K. — Origin and Significance of the so-called free Nuclei in 



the Nutrient Yolk of Bony Fishes „ 706 



Rydeb, J. A. — Resemblance of Ovarian Ova and the Primitive Foraminifera „ 706 



Biehringer, J. — Inversion of the Germinal Layers in the Shrew .. .. „ 706 



Ebner, V. v., & E. Sertoli — Spermatogenesis of Mammals „ 707 



Sanfelice, F. — Spermatogenesis in Guinea-pig .. .. „ 707 



Massart, J. — Irritability of Spermatozoa of Frog „ 707 



Hodssay, F., & Bataillon — Development of the Axolotl „ 707 



Ki pffer, C. — Development of the Lamprey „ 708 



Weismann, A., & C. Ischika'WA — Partial Impregnation ,, 709 



Hebtwig's (O.) ' Human and Vertebrate Embryology ' „ 710 



Virchow, H.— Physics of the Yolk Part 6 923 



Roux, W. — Embryonic Axis ,, 923 



Sanfelice, F. — Spermatogenesis of Vertebrates 923 



Prenant, A. — Spermatogenesis of Reptiles „ 924 



Sidebotham, H. — Fate of the Blastopore in Sana Temporaria „ 925 



