Transactions of the Royal Geological Society of Cornwall, Volume 13The Society, 1914 Vol. 6, includes the society's annual reports for 1844-46. |
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A. K. Barnett Academy adambulacral ambulacral Austell Bactrites beds Bolitho Medal Camborne Cant Cove Cant Hill Carne cassiterite chlorite clay cliff coast COLENSO contain copper Cornish Council depth Devon Devonian Dinham distal district Dolcoath earthy east Falmouth feet fissures foreshore fossils fragments Geol Geological Survey geologists Godrevy gold Goniatites granite gravel Green Head Howard Fox igneous rock interesting Islands Isles of Scilly J. D. Enys J. H. Collins latifrons Marazion metals mineral mines Ophiurid origin Orthoceras oxide paper peach Pearce pebbles Penzance Phacops Porthilly present pygidium pyrites Quarry quartz quartzite Raised Beach referred Reid Road Royal Geological Society Royal Society sand Sciences scientific segments slates Society of Cornwall South spec species specimen Stream Tin surface T. R. BOLITHO T. R. Polwhele tion tourmaline Trans Transactions trees Trewornan Trilobites Truro veins West William Bolitho
Populaire passages
Pagina 261 - The thing that hath been, it is that which shall be ; and that which is done is that which shall be done, and there is no new thing under the sun.
Pagina 200 - Geology is the science which investigates the successive changes that have taken place in the organic and inorganic kingdoms of nature; it enquires into the causes of these changes, and the influence which they have exerted in modifying the surface and external structure of our planet.
Pagina 107 - radiant matter'" about 1809, but chiefly in connection with what is now called "radiation." He also used the term in another sense, and the following passage* in its clear forecast is prophetic of the modern electron: If particles of gases were made to move in free space with an almost infinitely great velocity — ie, to become radiant matter — they might produce the different species of rays, so distinguished by their peculiar effects. In his lectures at the Royal Institution, in 181 ti, ''On...
Pagina 503 - CXIV. ^Ethiopia, which is the extremity of the habitable world, is contiguous to this country on the south-west. This produces gold in great quantities, elephants with their prodigious teeth, trees and shrubs of every kind, as well as ebony ; its inhabitants are also remarkable for their size, their beauty, and their length of life *. CXV.
Pagina 245 - ... while, in the very vicinity of these products of a more favoured climate, we find the Siberian stone-pine and the dwarf-birch of the polar circle in the high lands. The same holds good with regard to the fauna of the Transbaikalian districts. We see the Tunguze, mounted on his rein-deer, passing the Buraet with his camel, and discover the tigers of China in the forests where the bear is taking its winter sleep. The appellation of Dauri or borderers, which the natives of the government of Irkutsk...
Pagina 106 - And if such generalizations should be supported by facts, a new, a simple, and a grand philosophy would be the result. From the combination of different quantities of two or three species of ponderable matter, we might conceive all the diversity of material substances to owe their constitution, and as the electrical energies of bodies are capable of being measured, and as these are correspondent to their chemical attractions, so the laws of affinity may be subjected to the forms of the mathematical...
Pagina 70 - ... of attention is the considerable space that seems to intervene between the distal wing of one segment and the proximal wing of the next. This is conspicuous in the distal region of ray i, where, further, the depression (q in fig. 1 [32 B]) markedly resembles the podial depression (p in fig. 1), and differs from it mainly in being rather nearer the axis of the arm. The theory that the Ophiurids are descended from Asterids does not explain the evolution of such, an interspace, and the general tendency...
Pagina 66 - Bundenbachia l (see our Fig. 5). Here " the body of the [ambulacral] ossicle is apparently divided into two pieces by a transverse depression. The adambulacral plates are small and narrow, and support a triangular spine-bearing plate." If, however, as seems legitimate, this last plate be regarded as itself an adambulacral element, then each segment will consist of two ambulacral pairs, and two adambulacral pairs of which one only is spiniferous.
Pagina 70 - Jaekel in the paper quoted above. In this region of the ray, at any rate, adambulacrals and podia must have been suppressed in all Ophiurids. We may here note the apparent absence from our specimen of the adambulacral elements known as side mouth-shields, as well as of the peristomial plates. The latter are wanting in most early Ophiurids, a fact confirmatory of Dr. zur Strassen's conclusion that they are not ambulacral elements, but 'secondary calcifications confined to the interradial region.