Bulletin of the United States Geological and Geographical Survey of the Territories, المجلد 51880 |
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طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
2d ser abdomen Acad ANON antennæ April basal Birds collected breeds BREWER Bull Cinclus Club Colo color COUES coxæ Elytra Falco fauna Féruss Forest and Stream fossils G. N. Descriptions genera genus GOULD Gray Green Sandpiper Grouse habits Haliaëtus Hist Ibis joint Journ July LAFRESNAYE LAWRENCE length List of Birds Lomita Loudon's Mag Loxia margin metathorax Nasua Note Nutt observed Occurrence Oiseaux Oken's Isis ologist Ornith Ornithology Ortyx virginiana Pacific Railroad Peregrine Falcon Phalarope Phila plates posterior premolar Proc prothorax punctured River Rod and Gun SALVIN Sandpiper SCLATER seen segment Snipe Gallinago Sparrow Passer domesticus Species of Birds specimens strata synonymy tail tibiæ Totanus transverse Tringa Trochilidæ Trochilus Turdus Ueber Union Pacific Railroad viii Vögel Wheeler wings Zool Zoolo Zoologist
مقاطع مشهورة
الصفحة 11 - ... sexual individuals, the females of which so often perish while yet covering their solitary winter eggs. I have not been able to prove absolutely that there are two broods of the gall-making female, and my observations all tend to the conclusion that no galls are formed except by the stem-mother that hatches from the impregnated egg.
الصفحة 6 - ... during the latter part of June and the early part of July, but leaves the latter part of the summer poorly occupied.
الصفحة 10 - They doubtless insert their beaks in various portions of the buds or expanding leaves ere settling, since, before the gall begins to form, the little architect has generally obtained twice the size it had when first hatched. By the middle of April, in the latitude of Saint Louis, the galls generally begin to show, at first as slight elongate ridges on the upper surface, with corresponding closed depressions on the lower surface. Upon drawing apart the lips of the wrinkle beneath, at this stage of...
الصفحة 244 - L'Amérique Méridionale, par Don Félix de Azara, Commissaire et Commandant des limites espagnoles dans le Paraguay depuis 1781 jusqu'en 1801 ; Contenant la description géographique, politique et civile du Paraguay et de la rivière de La Plata ; l'histoire de la découverte et de la conquête de...
الصفحة 5 - Having attained maturity, she commenees peopling her pseudo-gall with young at the rate of about one every six or seven hours, according to temperature, increasing in bulk and prolificacy from day to day, until by the early part of May, in the latitude of Saint Louis, she has attained her fullest development, and soon perishes. She may attain to nearly four millimetres in length, and, with greatly swollen body, be almost as wide (Fig.
الصفحة 124 - ... the bleached trunks of the ancient forests. In the steeper middle portion of the mountain face, rows of upright trunks stand out on the ledges like the. columns of a ruined temple. On the more gentle, slopes farther down, but where it is still too steep to support vegetation, save a few pines, the petrified trunks fairly cover the surface, and were at first supposed by us to be the shattered remains of a recent forest.
الصفحة 5 - ... b). Her immediate issue, or the second generation, are like her in many respects, but never grow to be quite so large. The individuals of this generation soon accumulate in great numbers around her, and in their turn commence to bring forth young, some remaining within the original curl, others scattering to found new colonies. Their issue, or the third generation, show certain marked structural differences from the first (see description), and are destined to become winged. "During most of the...
الصفحة 148 - Thesaurus Devonico-Carboniferus : the Flora and Fauna of the Devonian and Carboniferous Periods, the Genera and Species arranged in Tabular Form, showing their Horizons, Recurrences, Localities, and other Facts : with Large Addenda from Recent Acquisitions, Lon., 1S7!*, 4to.
الصفحة 193 - ... that; this vertical dislocation took place after the whole area was compressed into a great region of anticlinals with intermediate synclinals. In other words, it was a region of enormous and complicated folds, riven in later time by a vast series of vertical displacements, which have partly cleft the anticlinals down through their geological axes, and partly cut the old folds diagonally or perpendicularly to their axes.
الصفحة 6 - While the individuals thus wandering are mostly the younger ones, the migrating instinct seems sometimes to possess individuals of all ages, especially where the tree is badly affected; and that they perish is proved by the mass of dead lice which in such a case may be found around the base of a tree. So far as I have been able to learn by confining specimens of the fifth generation, which is very similar to the fourth, but with shorter pronrascis, the fifth reproduces like the fourth without acquiring...