Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Band 32American Philosophical Society., 1894 |
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Seite 408
... dorsal furrow and the latter the contact furrow . The ananeanic substage among Carboniferous cephalopods is not only marked by the beginning of the contact furrow but also , as a rule , by the introduction of correlative changes in the ...
... dorsal furrow and the latter the contact furrow . The ananeanic substage among Carboniferous cephalopods is not only marked by the beginning of the contact furrow but also , as a rule , by the introduction of correlative changes in the ...
Seite 424
... dorsal furrow , " or , after contact , as a " contact fur- row . " The " zone of inclusion " or " included zone " is the cov- ered area corresponding to this on the venter . The term " zones of involution " or " area of involution " can ...
... dorsal furrow , " or , after contact , as a " contact fur- row . " The " zone of inclusion " or " included zone " is the cov- ered area corresponding to this on the venter . The term " zones of involution " or " area of involution " can ...
Seite 425
... dorsal angle , p . d . g . , ex . Tri- gonoceras . Diagram E. - Section of a ... furrow nearly as broad as the dorsum , the sides flat and well defined ... furrow remains primitive or undivided . This may be * This same diagram can also ...
... dorsal angle , p . d . g . , ex . Tri- gonoceras . Diagram E. - Section of a ... furrow nearly as broad as the dorsum , the sides flat and well defined ... furrow remains primitive or undivided . This may be * This same diagram can also ...
Seite 434
... dorsal furrow appears in some species , perhaps in all , in the paranepionic substage . This might be considered as due to the quick growth and contiguity of the whorls , the dorsum of the paranepionic substage being brought close to ...
... dorsal furrow appears in some species , perhaps in all , in the paranepionic substage . This might be considered as due to the quick growth and contiguity of the whorls , the dorsum of the paranepionic substage being brought close to ...
Seite 436
... dorsal furrow here , as in Trocho- lites , although occurring in the paranepionic substage before the whorls touch , is perhaps due to the close contiguity of the whorls and the rapid ingrowth of the primitive umbilical zones . This ...
... dorsal furrow here , as in Trocho- lites , although occurring in the paranepionic substage before the whorls touch , is perhaps due to the close contiguity of the whorls and the rapid ingrowth of the primitive umbilical zones . This ...
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Häufige Begriffe und Wortgruppen
abdomen amber AMER Ammonoidea Ammonoids ananeanic substage ananepionic aperture apex Aphetoceras apical appears arcuate auxiliary vein Barrande Cenoceras characteristics characters Cladura closely coiled contact furrow costa cross vein described diameter discal cell distinct dorsal furrow dorsal lobes dorsum electrical ephebic stage Estonioceras Eutrephoceras femora figured Florissant fossil genera genus gerontic gerontic stage gyroceran Heer hind femora hyponomic impressed zone involution Kaiser legs Length of wings lines of growth Lituites living chamber Loew long as broad longitudinal vein magnet marginal cell metanepionic substage Nautiloidea Nautiloids Nautilus Nautilus pompilius neanic stage nepionic stage Nostoceras observed ontogeny Osten Sacken outline paranepionic substage PHILOS plates posterior cell præfurca PROC Prof protoconch Ptychoceras Radoboj saddles Schroederoceras septa septum shown Silurian similar siphuncle Society species specimen sutures tertiary tibiæ tion Tipula transverse Trocholites tubercles umbilical perforation umbilical zones venter ventral ventro-dorsal volution whorl XXXII young
Beliebte Passagen
Seite 104 - Society of London, a present of a glass tube with some account of the use of it in making such experiments. I eagerly seized the opportunity of repeating what I had seen at Boston; and, by much practice...
Seite 110 - Make a small cross of two light strips of cedar, the arms so long as to reach to the four corners of a large thin silk handkerchief when extended ; tie the corners of the handkerchief to the extremities of the cross, so you have the body of a kite ; which, being properly accommodated with a tail, loop, and string, will rise in the air, like those made of paper; but this being of silk is fitter to bear the wet and wind of a thundergust without tearing.
Seite 108 - Chagrined a little that we have been hitherto able to produce nothing in this way of use to mankind ; and the hot weather coming on, when electrical experiments are not so agreeable, it is proposed to put an end to them for this season somewhat humorously in a party of pleasure on the banks of Skuylkil. Spirits, at the same time, are to be fired by a spark sent from side to side through the river, without any other conductor than the water ; an experiment which we some time since performed to the...
Seite 242 - On three several Hurricanes of the Atlantic, and their Relations to the Northers of Mexico and Central America, with Notices of other Storms.
Seite 103 - Collinson, Fellow of the Royal Society of London, a present of a glass tube, with some account of the use of it in making such experiments.
Seite 113 - I have never entered into any controversy in defence of my philosophical opinions; I leave them to take their chance in the world. If they are right, truth and experience will support them ; if wrong, they ought to be refuted and rejected.
Seite 109 - A turkey is to be killed for our dinner by the electrical shock, and roasted by the electrical jack, before a fire kindled by the electrified bottle; when the healths of all the famous electricians in England, Holland, France, and Germany are to be drank in electrified bumpers, under the discharge of guns from the electrical battery.
Seite 258 - Report of the Chief Signal Officer to the Secretary of War for the year ending June 30, 1871.
Seite 113 - The king's changing his pointed conductors for blunt ones is, therefore, a matter of small importance to me. If I had a wish about it, it would be that he had rejected them altogether as ineffectual. For it is only since he thought himself and family safe from the thunder of heaven that he dared to use his own thunder in destroying his innocent subjects...
Seite 128 - ... a current from a trough, if not increased, is but slightly diminished in passing through a long wire is certain. . . . " But be this as it may, the fact that the magnetic action of a current from a trough is, at least, not sensibly diminished by passing through a long wire is directly applicable to Mr.