Bulletin of the Museum of Comparative Zoology, Volume 3The Museum, 1863 - Zoology |
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abdominal Abundant adult Allorchestes Ammonites angle animal aperture apex appears arm-spines atrial birds Brachiopods branchial cavity branchial sac Carboniferous cells cicatrix closely coast color Colorado City Common Conch Crania described diameters Discina disk Eastern Kansas edge eggs embryo endostyle fauna genera genus Goniatites hæmal Helix Hist inner interbrachial spaces Lake Titicaca layer length to breadth lower male margin median Middle Kansas Moho Moll Mountains of Colorado mouth mouth-shield Müll Nautilus Pompilius nearly nest observed Ogden Ophiothrix Ophiura organs outer tunic ovisac pair papillæ Philippines Plains Plate portion posterior Province Pyrosoma radial shields Region ridge rounded Salpa Salt Lake Salt Lake Valley second septum seen septa septum shell side arm-plate Silurian siphonal cœcum siphonal funnel species specimens spines stolon stumps surface sutures synonymy telson tentacle-scales thick timber line upper arm-plates Utah valve ventral whorl young Zonites zooids
Popular passages
Page 53 - Britain, especially noticeable upon Schiehallion, is owing to the action of the great European ice-sheet during the maximum extension of the glacial phenomena in Europe, and has nothing to do with the local glaciers of the British Isles. Among the facts already known from the southern hemisphere are the so-called rivers of stone of the Falkland Islands, which attracted the attention of Darwin during his cruise with Captain Fitzroy, and which have remained an enigma to this day. I believe it will...
Page 53 - You may ask what the question of drift has to do with deepsea dredging? The connection is closer than may at first appear. If drift is not of glacial origin, but the product of marine currents, its formation at once becomes a matter for the Coast Survey to investigate, and I believe, it will be found in the end, that, so far from being accumulated by the sea, the drift of the lowlands of Patagonia has been worn away to its present extent by the continued encroachment of the ocean in the same manner...
Page 49 - ... geographical distribution of all living beings ; or, in other words, if this world of ours is the work of intelligence, and not merely the product of force and matter, the human mind, as a part of the whole, should so chime with it, that, from what is known, it may reach the unknown ; and if this be so...
Page 200 - Possessions, between the Rocky Mountains on the east, and the Sierra Nevada and Cascade Mountains on the west. The following are the species peculiar to the province : — Patula strigosa.
Page 117 - ... specifically differentiated will evidently require modifications of the hitherto accepted nomenclature. Evidently, many of these forms are so strongly marked that they should be, in some manner, recognized in nomenclature, though admittedly of less than specific rank. Most naturalists now practically recognize as species such groups of individuals as are not known to graduate by nearly imperceptible stages into any other similar group, and as varieties such groups of individuals as occur at certain...
Page 49 - Natural History has advanced toward that point of maturity when science may anticipate the discovery of facts. If there is, as I believe to be the case, a plan according to which the affinities among animals and the order of their succession in time were determined from the beginning, and if that plan is reflected in the mode of growth, and in the geographical distribution of all living beings ; or, in other words, if this world of ours is the work of intelligence, and not merely the product of force...
Page 41 - Panama to Peru. Type of the subgenus. I have examined an immense number of specimens from Panama, and find that they exhibit many varieties. The apex of very young shells is circular, whitish, and of a different texture from the remainder of the shell. This circumstance was first pointed out by Mr. ES Morse. The nucleus is probably the remains of the embryonic shell. The species has no radiating striae, and is a thinner shell than laevu.
Page 53 - ... and the boulders must have been derived from rocky exposures lying to the south of their present position. Whether this is so or not has not yet been ascertained by direct observation. I expect to find it so throughout the temperate and cold zones of the southern hemisphere, with the sole exception of the present glaciers of Tierra del Fuego and Patagonia, which may have transported boulders in every direction.
Page 53 - Patagonia, which may have transported boulders in every direction. Even in Europe, geologists have not yet sufficiently discriminated between local glaciers and the phenomena connected with their different degrees of successive retreat on the one hand, and the facts indicating the action of an expansive and continuous sheet of ice moving over the whole continent from north to south. Unquestionably the abrasion of the summits of the mountains of Great Britain, especially noticeable...
Page 3 - Fuller indicates it to be, with other good qualities which he ascribes to it, it is a matter of surprise that it has not been more extensively cultivated. The plant itself is quite ornamental, and it certainly deserves further trial, especially in the cold Northwest. THE BLACK HAW (Viburnum prunifolium).