Proceedings of the Academy of Natural Sciences of Philadelphia

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Academy of Natural Sciences of Philadelphia, 1865 - Biology
 

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Page 290 - Report of the Proceedings of the Geological and Polytechnic Society of the West Riding of Yorkshire, 1863—4.
Page 172 - The teeth are fixed and extremely minute, the largest being little more than a line in length, and decrease towards the ends of the jaw; they are disposed in regularly transverse rows, of which there are over one hundred and sixty...
Page 284 - Albany Institute, Oct. 16th, acknowledging the receipt of the Proceedings. Secretaries of the House of Bishops and of the House of. Clerical and Lay Deputies of the Protestant Episcopal Convention, Oct. 19th and 20th, acknowledging the invitation to visit the Museum of the Academy and returning thanks therefor. November 14th.
Page 274 - Harbour, and some way up the river; but we could never take any of them. Several have shot sluggs at them, but lost their labour.
Page 259 - York, but on a closer inspection it will be at once seen to differ materially in the more rapid increase in the breadth of its whorls, and in the proportionally smaller size and greater depth of its umbilicus, as well as being apparently not coiled on a plane.
Page 296 - Plates illustrating in part the new species of fossils from the Palaeozoic rocks of the Western United States, and two species noticed March 1860, published 1865, pis.
Page 37 - ... country, and that we are justified in regarding, and we sincerely recommend our successors as members of this Academy to regard, his munificent and unparalleled contributions to our library, and especially to our museum, (nearly the whole of which, in several departments, we owe to his liberality), as an honorable and perpetual monument to his zeal in behalf of the natural sciences. Resolved, That a copy of these resolutions be presented to each of the brothers and sisters of Dr. Wilson, and...
Page 244 - Beaks moderately prominent, small, strongly incurved ; umbonal slopes very prominent, angular, and directed obliquely forward to the angular anterior basal extremity. Surface ornamented with rather sharply elevated, thread-like, subcrenate radiating ribs, narrower than the depressions between; each of these depressions on the posterior and flattened anterior sides of the valves occupied by a smaller intermediate rib ; entire surface also marked by fine very regular radiating and concentric striae,...
Page 251 - York species, to which it seems to be nearly related, it will be distinguished by its compressed, instead of cylindrical form. It is true this compression may be in some degree due to accidental pressure, but it seems to be too regular along the entire length of the shell not to be mainly the natural form. Locality and position. Joliet, Illinois. Niagara division of the Upper Silurian series.
Page 252 - ... or beaded between), placed on the shorter axis of the septa only about its own breadth from the margin. Surface nearly smooth, or with more obscure lines of growth, which, like the margins of the septa, make a slight backward curve in crossing the dorsal and ventral sides. Length of an entirely septate specimen, imperfect at both extremities, 3* inches ; greater diameter at the larger end, 1-50 inches ; apical angle 15°, apparently becoming greater towards the smaller end. This species seems...

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