The Journal of the College of Science, Imperial University of Tokyo, Japan, Volume 5The University, 1893 |
Outras edições - Ver tudo
The Journal of the College of Science, Imperial ..., Volume 23,Edições 12-14 Visualização integral - 1908 |
Palavras e frases frequentes
Abukuma plateau aggregate amphibole amphibolite angles apatite appearance appendage appendage-bearing segment Arachnida Archæan augite bands become biotite biotite-granite blastodermic thickening blastoporic blastoporic passage brain cephalic lobe cephalothorax chloritic chorda chorda-anlage cœlomic cavity colour columnar components crossed nicols crystals days after fertilization dioritic dorsal dykes embryo enclosed epiblast epiblastic thickening epidote feldspar formation ganglia gastral mesoblast gastrulation gland gneiss Gozaisho gradually grains granite granular groove gut-hypoblast hornblende hornblende-granite hypoblast invaginated tube invagination Isshiki lamella lateral eyes Laurentian layer Limulus longitudinal magnet magnetite margin median eyes median line mesoblast mesoblast cells mica mica-schist microscope mineral Nagoya nuclei observed occurs olivine optic orthoclase paired plagioclase plane polar body polarization-colours portion posterior end present quartz region rock schist schistose schistose granite seen side species specimens stage structure surface Takanuki series thick titanite Transverse section Trilobites Tsushima twinning upper ventral plate ventrum yolk yolk-cells zone
Passagens conhecidas
Página 30 - Untersuchungen iiber die ersten Entwicklungsvorgange in den Eiern der Insekten. II Ueber Spermatogenese und deren Beziehung zur Eientwicklung bei Pyrrhocoris apterus.
Página 140 - ... until it meets and fuses •with its fellow of the opposite side to form the definitive roof of the enteric cavity.
Página 30 - Beitrage zur Kenntniss der Bildung, Befruchtung und Theilung des thierischen Eies.
Página 35 - Professor of Zoology, Agricultural College, Imperial University. (Plate I.) Further Studies on the Formation of the Germinal Layers in Chelonia. (Contributions to the Embryology of ReptHia 111.) By K.
Página 132 - ... places two cells thick. In such cases, wherever the roof consists of a single layer, the cells assume a columnar shape, different from the irregular polygonal shapes of earlier stages. As to the manner in which the roof of the segmentation cavity thins out, previous writers seem to consider that it is brought about by the inner cells of the roof passing round to the sides and to the floor of the segmentation cavity, while the outermost layer of cells becomes the definitive epiblast.
Página 211 - In the upper division two groups are recognized, one the Keewatin of the lake of the Woods, and the other, inferior in position, is given the name Gotitchichiug.
Página 262 - We know that living flesh, when examined under the microscope, is seen to be made up of innumerable small compartments or divisions, called cells.