X CONTENTS. 



PAGE 



Emm, G. n. T.— Origin of SiKcies Parti 31 



GuLICK, J. T. — Divergent Evolution through Cumulative Segregation .. „ 33 



NusSBAUM, W.— Heredity » 34 



Amans, p. 0. — Organs of Aquatic Locomotion „ 35 



Sutton, J. Bland — Evolution of the Central Nervous System of Verte- 



hrata Part 2 187 



Oek, H. — Development of Central Nervous System of Amphibians ,. .. „ 188 



Nansen, F. — Protandric Hermaphroditism of My xine „ 188 



BoHM, A. A. — Maturation and Fertilization of Ovum in the Lamprey ,. „ 189 



Nelson, E. M. — Observations on Human Spermatozoa „ 190 



ScHULZE, F. E. — Epithelial Glands in Batrachian Larvse „ 190 



Packard, A. S. — Factors in the Evolution of Cave Animals „ 191 



Gaskell, W. H. — Origin of Nervous System of Vertebrates Part 3 360 



Ebnee, V. V. — Protovertebrm and the Segmentation of the Vertebral Column „ 362 



Phisalix, C — Study of a Human Embryo „ 362 



Hennegoy, F. — Development of Bony Fishes „ 363 



Lankesteb, E. Eay — Structure of Amphioxus lanceolatus „ 363 



Veeson, E. — Spermatogenesis „ 364 



BiONDi, D. — Spermatogenesis in Man , , , . . . „ 365 



Platner, G. — Import of Polar Globules „ 365 



Born, G. — Segmentation in Double Organisms „ 366 



MiNOT, C. S. — Uterus and Embryo Part 4 489 



Tafani, a. — Fecundation and Segmentation of Ova of Rats , 490 



Cunningham, J. T. — Eeproduction and Development of Teleostean Fishes „ 491 



Wallace, A. E. — Darwinism Part 5 619 



Thomson, J. A. — Heredity „ 619 



Curtis, F. — Development of Nail in Human Fcetus „ 620 



Masitjs, J. — Formation of Placenta of Babbit „ 621 



Beddard, F. E. — Structure of Graafian Follicle in Didelphys „ 622 



Beard, J. — Early Development of Lepidosteus osseus .. .. „ 622 



NiESSiNG, G. — Spermatogenesis in Mammals „ 623 



ScHWAEZ, E. — Embryonic Cell-division „ 624 



M'Oluee, C. F. W. — Primitive Segmentation of Vertebrate Brain .. . . Part 6 725 



ZiEGLER, H. E. — Origin of Blood of Vertebrates 725 



Waldeyer, W. — Placenta of Inuus nemestrinus „ 726 



Turner, SiE William — Placentation of the Dugong „ 726 



Heinricius, G. — Development of Placenta in Dog „ 726 



Shore, T. W., & J. W. Pickering — Pro-amnion and Amnion in the 



Chick „ 726 



Morgan, T. H., & E. C. Applegaeth — Fate of Amphibian Blastopore „ 727 



Massaet, J. — Penetration of Spermatozoa into Ova of Frog ,, 727 



Geandis, V. — Spermatogenesis during Inanition „ 728 



|8. Histology. 



Kollet, a.— Structure of Muscle Parti 35 



Ballowitz, E. — Structure of Spermatozoa „ 36 



LuKJANOW, S. M. — Club-shaped Nucleoli „ 36 



EoHDE, E. — Nervous System of Amphioxus „ 36 



ToEOK, L. — Division of Red Blood-corpuscles in Amphibia Part 2 191 



Platner, G. — Structure of the Cell and Phenomena of its Division . . . . Part 3 366 



Deogoul — Process of Ossification ,, 367 



Feommann, C. — Vital Processes in Living Cells Part 4 492 



MoEPUEGO, B. — New Formation of Cells 493 



Tangl, F. — Relation between Cell-body and Nucleus 493 



