Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Band 32American Philosophical Society., 1894 |
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Seite 276
... stage being from six to seven days . In this stage the head is not covered by the prothoracic segment , which though large has not yet become hoodlike . The very long fine spinulated hairs arise from all the tubercles , of which there ...
... stage being from six to seven days . In this stage the head is not covered by the prothoracic segment , which though large has not yet become hoodlike . The very long fine spinulated hairs arise from all the tubercles , of which there ...
Seite 277
American Philosophical Society. Fig . 1 represents the freshly hatched larva , Stage I , drawn with the tubercles , hairs and spines ; abl1 , the first , ablo , the sixth , pair of abdominal legs . Fig . 2 represents the armature in Stage ...
American Philosophical Society. Fig . 1 represents the freshly hatched larva , Stage I , drawn with the tubercles , hairs and spines ; abl1 , the first , ablo , the sixth , pair of abdominal legs . Fig . 2 represents the armature in Stage ...
Seite 278
... Stage V. Stage III . - Length , 5 mm . Of the same color as before , and with no noteworthy change in appearance . It molted again July 25-26 , the length of the stage being about nine days . Stage IV . - Length , 7-8 mm . The larva ...
... Stage V. Stage III . - Length , 5 mm . Of the same color as before , and with no noteworthy change in appearance . It molted again July 25-26 , the length of the stage being about nine days . Stage IV . - Length , 7-8 mm . The larva ...
Seite 285
... stage of pantopody has only a very ephemeral duration . " In Pieris there are the same relations as in Bombyx ... stage , in which the abdominal legs al - al1 appear . B. Later stage when they are very faint and all except al - al and ...
... stage of pantopody has only a very ephemeral duration . " In Pieris there are the same relations as in Bombyx ... stage , in which the abdominal legs al - al1 appear . B. Later stage when they are very faint and all except al - al and ...
Seite 287
... Stage IV . It is a little . longer and larger than before ( both figures are drawn to the same scale , X one half ... stage ( sp . ' ) is nearly twice as large as in Stage III ( A. sp . ) . In the later stages these processes are ...
... Stage IV . It is a little . longer and larger than before ( both figures are drawn to the same scale , X one half ... stage ( sp . ' ) is nearly twice as large as in Stage III ( A. sp . ) . In the later stages these processes are ...
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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.