Proceedings of the Boston Society of Natural History, Band 20Boston Society of Natural History., 1881 |
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abdomen acid amygdules angle animals antennæ antero-lateral Antheridia apex apical basal birds Bogota Boston Braun Brazil breccia broad carapax cerci Char Chara clay clypeus collection color conglomerate Cress deposits Devonian distinct ectoderm Ecuador eggs England Ereré Exsic fastigium feet felsite female femora flasks formation Fresnaye front genus geological Gould granite gravel guano hind femora hind tibiæ insects Island joint kame Kütz labrum Lake Larra Larrada larva larvæ layers length lenticular hills lime lobe locality not given Lockington male mandibles margin Mass metathorax miles nearly Nitella number of cells observed ocellus paper pebbles phosphate plants posterior present probably Prof pronotum pubescence quartzite Raben region Rhizophysa ridge River rocks rounded sandstone senescence side Siphonophores slender slightly species specimens spines Sporangia sporangium Stiz surface Tachytes teeth tegmina tibiæ tion tooth transverse tubercles upper valley valve whorls
Beliebte Passagen
Seite 465 - The appearance is as if here a floe grounded. In the upper kame the stratification is arched or combined with a tendency to dip lengthwise of the kame, showing the action of alternating currents in that direction. The evidence of the marine origin of the clays which overlie the kames is conclusive. Leda, Mya, Balanus and other genera have been found in the stratified and undisturbed clay which filled a low place in a kame, and directly on top of the ridge. MATERIALS OF THE KAMES. At the northern...
Seite 432 - Nc. 9, Range 4, west of the East line of the State. A straight line connecting these points passes within a few miles of the northern extremities of such of the intermediate kames as reach farthest towards the north, and is roughly parallel with the coast. North and west of this line there are occasional hillocks, and short ridges or bars of apparently the same origin as the kames, but thus far they cannot be classified into long systems. All who have travelled north of the grand divide speak of...
Seite 70 - ... sharp, triangular, but much broader than long. The general color is a dirty cinereous above, a dingy clay yellow below; antennae dull testaceous, becoming somewhat ferruginous toward the tip; a pretty broad and usually distinct blackish brown or piceous band extends from behind the eye along the upper border of the deflected lobes...
Seite 161 - When there has been no reason to suppose that the trawl has sunk more than one or two inches in the clay, we have had in the bag over a hundred sharks...
Seite 45 - Europe is that level tract which extends from the shores of the German Ocean to the Ural mountains and the Caspian Sea, and comprehends the Netherlands, Northern Germany, Prussia, Poland, and the greater part of Russia, rising nowhere more than a few hundred feet above the level of the sea. DESERTS...
Seite 162 - The nature and origin of this vast deposit of clay is a question of the very greatest interest; and although I think there can be no doubt that it is in the main solved, yet some matters of detail are still involved in difficulty. My first impression was that it might be the most minutely divided material, the ultimate sediment produced by the disintegration of the land, by rivers and by the action of the sea on exposed coasts, and held in suspension and distributed by ocean currents, and only making...
Seite 224 - ... as great width. Their height, corresponding to their area, varies from twenty-five to two hundred feet. But, whatever may be their size and height, they are singularly alike in outline and form, usually having steep sides, with gently sloping, rounded tops, and presenting a very smooth and...
Seite 233 - Hampshire, were the first to discover the parallelism between glacial motion and the axes of drumlins in 1875. They concluded that " the accumulation of these hills and slopes seems to have been by slow and long-continued addition of material to their surface, the mass remaining nearly stationary from the beginning of its deposition. Obviously this was the case with the lenticular slopes gathered behind the shelter of higher ledgy hills or upon their opposite sides...
Seite 226 - ... the still bay. On the north side is another hill, equal in bigness, whereon stands a windmill. To the northwest is a high mountain, with three little rising hills on the top of it, wherefore it is called the Tramount.
Seite 68 - Tegmina dark brownish cinereous with a slender median yellow stripe, frequently broken by quadrate fuscous or blackish spots, and similar spots are scattered rather distantly all over the tegmina, giving them an unusually speckled appearance. Hind femora variable, either with oblique pale patches on a dark ground or — and generally — the reverse; hind tibiae glaucous, with black-tipped spines, ten or eleven in number in the outer series. Extremity of male abdomen as shown in Fig. 115. Length...