CONTENTS. IX 



PACK 



Meyburg, H. — Stitdies in Bone Development 294 



Imhof, G. — Lumbar Spinal Cord in Birds 295 



Packard, A. S. — Notes on Opisfhenogenesis 295 



Loeb, L. — Ovarian Eggs of Guinea-pig 421 



Comes, 8. — Follicles and Egg-envelope* of Belone acus 422 



Cerbuti, A. — Nucleolar Dissolution 422 



Brachet, A. — Experimental Researches on Egg of Rana fusca 422 



Adolphi, H. — Motion of Spermatozoa 422 



Roth, A. — Structure and Movements of Spermatozoa 422 



Retzius, G. — Accessory Nuclear Structures in Spermatozoa 423 



Oceanu, P., & A. Babes — Influence of Ovariotomy in Goat 423 



Godlewski. E. — Influence of Nervous System in Regeneration 423 



Bauer, A. — Regeneration of Limbs in Tadpoles of Frog 423 



Sabin, C. G. — Origin of Subclavian Artery in Chick 423 



Greil, Alfred — Origin of Lungs 423 



Spemann, H. — Lens Formation in Frog 424 



Williamson, H. C. — Early Stages of Pleuronectes cynoglossus 424 



Boveri, Th. — Number of Chromosomes .. 574 



Gurwitsch, A. — Experiments on Cytoplasm of Amphibian Ovum 574 



Yatsu, Naohide — Formation of Centrosomes in Enuncleated Egg-Fragments . . 575 



Lubosch, W. — Ovum of Lamprey 575 



Gerhardt, Ulrich — Passage of the Mammalian Ovum into the Fidlopian Tube .. 575 



Stricht, O. van der — Vilellogenous Layer and Mitochondria in Ova of Mammals 576 



Retzius, G. — Spermatozoa of Invertebrates 576 



Perez, Ch. — Phagocytic Absorption of Spermatozoa 576 



Bra us, H. — Transplantation of Primordia 576 



Kellicott, W. E. — Development of Vascular and Respiratory Systems of Ceratodus 576 



Lubosch, W. — Development of Olfactory Organ of Lamprey 577 



Retzius, G. — Closure of Nasal Apertures in Human Embryo 577 



Greil. A. — Sixth Branchial Pouches in Amphibians 577 



Forster, Anton — Origin of Double Monstrosities 678 



Hofbauer, J., & H. Strahl — Studies on the Placenta .. 678 



PiESiNK, A. J. — Fcetal Membranes 679 



Marechal, J. — Development of Chromosomes in the Selachian Ovum 679 



Zeller, the late E. v. — Spermatophores of Newts .. 679 



Wederhake — Corpuscle of Human Sperm- Cells 679 



Raster, H. — Development of Islands of Laugerhans in Human Embryo 680 



Bussy, L. P. de — Development of Megalobatraclais maximus 680 



b. Histolog-y. 



Rohde, E. — The Histology of the Cell 38 



Maziarski, Stanislas — Relations betioeen Nwleu* and Cytoplasm 38 



Disselhorst, R. — Comparative Histology of Ducts and Accessory Glands of Male 



Gonads . . . . 38 



Jeleniewski, Zenon — Epithelium of the Epididymis 38 



Koiransky, Eugenie — Peculiar Structures in Hepatic Cells 39 



Petersen, O. — Position of Glycogen in Liver Cells .. . . 39 



Rennie, J. — Islets of Langerhans in Teleostei :-i9 



Loewenthal, N. — Granular Cells in Epidermis of Ammoccetes 39 



Scaffidi, V. — Structure of Human Hypophysis 40 



Flechsig, P. — Research Methods on Human Brain 40 



Forster, E. — Contraction of Smooth Muscle Cells 40 



Hoyer, M. H. — Lymph Hearts of R ana 40 



Chatin, Joannes — Comparative Histology of Cartilaginous Cells 41 



Auerbach, L. — Intra- and Extra-Cellular Nerve Nets in Vertebrates 168 



Harbison, R. G. — Peripheral Nerves of Vertebrates 168 



Wiedelshiem, R. — Cornu Ammonis in Man 169 



Kamon, K. — Olfactory Buds in Vertebrates 169 



Sterzi, G. — Structure of Hypophysis in Vertebrates .. .. 169 



Wolff, Max — Fibrillar Structure in Frog's Liver 169 



