Proceedings of the Academy of Natural Sciences of PhiladelphiaAcademy of Natural Sciences of Philadelphia, 1883 "Publications of the Academy of Natural Sciences of Philadelphia": v. 53, 1901, p. 788-794. |
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Page 11
... crystals have been dissolved . Pebbles of red sandstones and shales are frequent elements of our gravel , and have ... crystals of muscovite mica , occur in some localities , as in West Philadelphia , but a similar rock in place is ...
... crystals have been dissolved . Pebbles of red sandstones and shales are frequent elements of our gravel , and have ... crystals of muscovite mica , occur in some localities , as in West Philadelphia , but a similar rock in place is ...
Page 15
... crystals of microlite , fine crystals of columbite , of manganese tantalite , amazonite , albite , apatite , smoky quartz , and beryl ; of the last mineral a crystal was found , 25 inches in diameter and over 12 feet long . This ...
... crystals of microlite , fine crystals of columbite , of manganese tantalite , amazonite , albite , apatite , smoky quartz , and beryl ; of the last mineral a crystal was found , 25 inches in diameter and over 12 feet long . This ...
Page 38
... crystals in red Catskill sandstone ( No. IX ) . 2. Broad Top Mountain , Huntington Co. Thin transparent coatings of barite frequently cover the fossil ferns and calamites which occur in the carboniferous shales and fire - clay adjoining ...
... crystals in red Catskill sandstone ( No. IX ) . 2. Broad Top Mountain , Huntington Co. Thin transparent coatings of barite frequently cover the fossil ferns and calamites which occur in the carboniferous shales and fire - clay adjoining ...
Page 39
... crystals of glassy lustre . The crystals often occur in druses in the massive mineral , and are sometimes modified . Their form can only be distinguished with the microscope . Neither the crystals nor the massive substance show any ...
... crystals of glassy lustre . The crystals often occur in druses in the massive mineral , and are sometimes modified . Their form can only be distinguished with the microscope . Neither the crystals nor the massive substance show any ...
Page 40
... crystals and small veins of quartz , and sometimes contains also small seams of a soft reddish yellow mineral which ... crystal is due to its having been bent by the curving of the bed of schist in its earlier stages ; but , of course ...
... crystals and small veins of quartz , and sometimes contains also small seams of a soft reddish yellow mineral which ... crystal is due to its having been bent by the curving of the bed of schist in its earlier stages ; but , of course ...
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Common terms and phrases
Academy Ammonites antennæ appears Arango arises base beds Biceps bone border brachial branch breviter brownish calyx cent character Chester Columna interna Conrad crenulata cretaceous crystals deposits described diam diameter Digitorum distal distinct Division dopplerite dorsal eocene eurite Extensor F. V. Hayden fascia fauna fibres Flexor forms fossil Gabb genera genus geological gneiss green head Heilprin hornblende humerus I. V. Williamson Fund inch inserted jaunes LEIDY length locality Longitudo testæ lower magnetite male flowers margin Maryland median MEEHAN mica mill mineral miocene molars muscle Nearctic nerve nerve-supply nest North Nummulites oblique occur Odontomyia outcrop Palearctic peritrema persons present pinnules plates Pleuræ pliocene portion posterior premolar Procyon Prof quartz recent represented rocks Scalaria schists Scutellum serpentine slip Society South Carolina species specimens surface tendon tertiary thorax tibiæ tourmalines transverse tree truncata ulna Underbasals upper veins Virginia yellow yellowish
Popular passages
Page 378 - On the relation of the so-called "kames" of the Connecticut River valley to the terrace formation. Ibid., vol. 22, pp. 451-468. 1882. The flood of the Connecticut River valley from the melting of the Quaternary glacier.
Page 264 - orange-ant feeders' are provided with pig or goat bladders, which are baitedinside with lard. The orifices of these they apply to the entrance of nests, when the ants enter the bags and become a marketable commodity at the orangeries.
Page 116 - It was one of the most ancient as well as one of the most interesting places in sacred record.
Page 14 - The surface is irregular, occasionally rising into rounded lobes ; the efferent canals are deeply channeled in the upper surface of the sponge, five or six sometimes converging to a common orifice. The statospheres are numerous — rather small.
Page 317 - Palaearctic or of the Neotropical regions. Professor Huxley and Mr. Blyth advocate the former course ; Mr. Andrew Murray (for mammalia) and Professor Newton (for birds) think the latter would be more natural. No doubt much is to be said for both views...
Page 346 - Origin of sedias to whether they were originally deposited as such, or in some other tit(?s- — form, and afterwards altered to magnetite. It seems possible that, in some cases, beds may have been formed by the accumulation of iron sands, just as they are forming in the Gulf of St. Lawrence to-day, the material being derived from the disintegration of pre-existing crystalline rocks.
Page 207 - Margaritella, and the sub-genus Anchura, of the genus Aporrhais, are all recognized as strictly characteristic of the cretaceous; so much so, that the presence of a single undoubted representative of either of these genera would be strong presumptive evidence of the cretaceous age of any rocks in which it might be found.
Page 197 - HEILPRIN. The controversy which for a long time was maintained between Conrad and Gabb as to the age of the Tejon rocks of California, referred by the former to the eocene series, and by the latter considered to represent the uppermost member of the cretaceous (Division B of the California Report), can scarcely be considered to have settled the question at issue.
Page 382 - Observations on the fauna of Norfolk, and more particularly on the district of the Broads.
Page 110 - Wilcox found the parasites in four out of six birds examined. In the present specimen of a head a single worm is enclosed between the two laminae of the dura mater over the position of the interval of the cerebrum and cerebellum. As the parasite appears not to have been named, it was suggested that the name of its discoverer should be associated with it under the name Filaria wymani.