Report on the Hexactiniae of the Columbia University Expedition to Puget Sound During the Summer of 1896New York Academy of Sciences, 1901 - 52 Seiten |
Häufige Begriffe und Wortgruppen
ægirite Amphitrite analcite andesite ANNALS N. Y. ACAD annelids apatite Arenicola arrangement augite Baril bilateral biotite blastopore budded Carlgren cavity clavicle clavicular cleavage cœlomesoblast color Columbia University column wall Cribrina crystals cycle described developed dianthus dikes diorite divide division dorsal ectoderm embryo endodermal entoblast feldspar following program fourth quartet gastrulation genus grains ground-mass hornblende intergirdle cells lamellæ larvæ later magnetite meeting of Section mesenchyme mesenteries mesoblast microscope mineral minutes muscle musculature nephelite syenite observed occur orthoclase phenocrysts plagioclase plate Podarke porphyritic posterior present prisms Professor prototroch pyroxene quadrants radial region rock rudimentary cells San José San José district second quartet Secretary SECTION OF GEOLOGY Section were read side siphonoglyphes species specimens sphincter stage SUMMARY OF PAPERS surface syenite tentacles Text-Fig Thalassema third quartet tinguaite tion titanite Treadwell trochophore twinning ventral Verrill verrucæ Wilson YORK ACADEMY Zool
Beliebte Passagen
Seite 164 - December 28th, 1924, a meeting for the purpose of organizing a linguistic society was held in the American Museum of Natural History, 77th Street and Central Park West, New York City...
Seite 129 - I value in a scientific mind most of all that love of truth, that care in its pursuit and that humility of mind which makes the possibility of error always present more than any other quality. This is the mind which has built up modern science to its present perfection, which has laid one stone upon the other with such care that it to-day offers to the world the most complete monument to human reason.
Seite 78 - My kingdom is not of this world. I trust that I have got hold of my pitcher by the right handle — the true method of treating this study. For the pseudo-chemists seek gold ; but I have the true philosophy, science, which is more precious than any gold.
Seite 129 - It is the only mind which appreciates the imperfections of the human reason and is thus careful to guard against them. It is the only mind that values the truth as it should be valued and ignores all personal feeling in its pursuit. And this is the mind the physical laboratory is built to cultivate.
Seite 163 - Rocks which come to rest at a temperature uearing their consolidation point will present a wide zone of varying grain. (2) The time of cooling, other conditions being the same, varies as the square of the thickness of the dike. From this last law it is assumed that the size of the crystals vary as the square of their distances from the nearest margin ; then the square root of their area which can be measured varies directly as the distances from the margin. Thus we have a simple law of easy application.
Seite 45 - McMuRRiCH, JP Report on the Actiniae collected by the US Fish Commission steamer, Albatross, during the winter of 1887-88.
Seite 46 - Review of the Corals and Polyps of the West Coast of America. [Abstr.] in: Amer. Journ. Sc. a. Arts. 2. Ser. Vol. 48. 1869. p. 432—433. (Trans. Connect. Acad. 1869.) Revision of the Polypi of the Eastern Coast of the United States.
Seite 46 - Synopsis of the Polyps and Corals of the North Pacific Exploring Expedition.
Seite 239 - 86 Die Entstehung des Annelids aus der Larve von Lopadorhynchus Zeitschr. f. wiss. ZooL , Bd.
Seite 163 - Rocks," said that a general observation might be made in regard to intrusive dykes. Near the margin the rock is dense, often glassy without any appreciable grain, whereas the grain begins to grow coarse according to some definite law, progressively as the distance from the wall increases.