Transactions of the American Philosophical Society, Том 13;Том 19American Philosophical Society, 1869 Held at Philadelphia for promoting useful knowledge. |
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Acad Algæ angle antennæ anteriorly appear band basal base body broad brown canal canaliculate caudal fin caudal peduncle cephalic segment characters Chilopoda clay coal coincidence color comet coxæ Cretaceous depth distal dorsal fin elongate Eningen ether foliis fossil Fucoides genera genus Gervais Hybopsis inches joint Journ labium Lake lamina last pair lateral line lateralibus magnetic mandibles margin maxillæ median miles modice Mountains mouth Myriapoda narrow nearly Newport North observed obtuse ocelli operculum orbit pair of feet pedibus Pennsylvania peristome Philadelphia pieces pilose plants plates portion posterior posteriorly postice Proc procne Prof punctate radials rays River rocks rounded sandstone scales scuta scutis scutum shale short side Silurian slender slightly sparsely species specimens spines sterna sun's surface sutures teeth thick tubercles upper utrinque ventrals Wood Yoruba zodiacal light
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Сторінка 377 - ... dorsal. Greatest depth 5.33 times to origin of caudal. Muzzle rounded, very obtuse in profile, broad as two-thirds parietal width. Mandible short, outline slightly angulated in front. Total length 3.1 in. ; from end muzzle to first dorsal ray 1.375. Olivaceous above, dorsal scales narrowly black-edged ; no vertebral band ; sides and below silvery. The types of this species were procured in the Detroit River ; these with numerous others, from the St. Josephs, exhibit a dark lateral band extending...
Сторінка 22 - ... a diversity in conditions of climate, exposure, and soil which afford the peculiar habitat to which each species finds itself best adapted, and to which it clings more tenaciously than most plants of a higher order; for, as Professor Lesquereux, the close student of the moss world, aptly remarks, these humble and apparently useless beings have their geological and lithological preferences far better marked than any other kind of vegetable. The species prevailing in the northern part of the State...
Сторінка 442 - Remarks on thirteen new species of Crinoidea from the palaeozoic rocks of Indiana, Kentucky, and Ohio, and a description of certain peculiarities in the structure of the columns of Dolatocrinus , and their attachment to the body of the animal.
Сторінка 208 - ORNATUS, Girard. SPEC. CHAR. — Ground-color bluish black; segments narrowly margined posteriorly with reddish ; anterior margin of segments rather blue, whilst the middle is rather black, thus giving the appearance of three rings of color. The anterior portion, which is covered by the articulation, is fulvous. Feet deep chestnut-brown. Antennae rufous at base, blackish at tip. Stigmata not conspicuous ; marked by a series of small, obsolete blackish spots.
Сторінка 135 - ... adequate to the effect. The fact mentioned above, that the maxima of the perturbations at Hobarton succeed each other with the same retardation as the other magnetic phases, is one which cannot be explained either by the retardation of the effect of temperatures, or by the condensation of vapour. We cannot conceive how these should account for the general retardation of one hour. It is then a purely magnetic fact, the explanation of. which depends on that of the physical cause of solar and terrestrial...
Сторінка 38 - History," to quote Dr. Whewell's words,1 " when systematically treated, excludes all that is historical, for it classes objects by their permanent and universal properties, and has nothing to do with the narration of particular or casual facts." Now, if we consider the large number of tongues spoken in different parts of the world with all their dialectic and provincial varieties, if we observe the great changes which each of these tongues has undergone in the course of centuries, how Latin was changed...
Сторінка 103 - The chronicles of the West agree with those of the East in reporting such phenomena. A remarkable display was observed on the 4th of April, 1095, both in France and England.
Сторінка 320 - Nevertheless, they appear to belong to plants of a soft tissue, mere cellular, probably mostly uncellular vegetables, the debris of which had not by much the same chances of fossilization. The superabundance of vegetation testified by fossil remains in Palaeozoic ages is in accordance with one of nature's most evident laws. The amount of carbonic acid gas is acknowledged to have been, at the Palaeozoic times, far greater in the atmosphere, and also in the water of the seas, than it is now. The prodigious...
Сторінка 38 - ... three mighty arms, which, before they disappear from our sight in the far distance, clearly show a convergence towards one common source: it would seem, indeed, as if there were an historical life inherent in language, and as if both the will of man and the power of time could tell, if not on its substance, at least on its form."t 11. The third of these "mighty arms," appears to have had a pre-Semitic branch, which traversed the whole breadth of Africa.
Сторінка 101 - The acute mind of Olbers led him almost to predict that the next appearance of the phenomenon of shooting stars and fire-balls intermixed, falling like flakes of snow, would not recur until between the 12th and 14th of November, 1867. The stream of the November asteroids has occasionally only been visible in a small section of the Earth. Thus, for instance, a very splendid...