Proceedings of the Bristol Naturalists' Society, Volume 4

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Page 51 - ... a cube of wood, rstuvwx, there is a conical hole, a, closed at one side by the membrane, b (made of the lesser intestine of the pig), upon the middle of which a little strip of platinum is cemented as a conductor of the current. This is united with the binding-screw, p. From the binding-screw...
Page 175 - The diluvian waters to which these effects must be referred (if we except the very limited and partial action of modern causes, such as of torrents in cutting ravines of rivers, in forming deltas, of the sea in eroding its cliffs, and of volcanos in ejecting and accumulating mineral matter) appear to have been the last agents that have operated in any extensive degree to change the form of the earth's surface.
Page 49 - The little curved lever took up these motions precisely as the "hammer "-bone of the human ear does ; and, like the " hammer "-bone, transferred them to that with which it was in contact. The result was that the contact between the upper end of the lever and the spring was caused to vary. With every rarefaction of the air the membrane moved forward, and the upper end of the little lever moved backward and pressed more firmly than before against the spring, 1 The property of M.
Page 45 - Since the length of the conducting wire may be extended for this purpose just as far as in direct telegraphy, I give to my instrument the name ' telephone.' " Towards the end of the memoir it is stated that until now it had not been possible to reproduce the tones of human speech with a distinctness sufficient to satisfy everybody : " The consonants are for the most part...
Page 147 - It must always remain a question of individual opinion as to what is really the Peziza brunnea A. and S. and the Peziza hybrida, Sow., and whether both are the same species. Recently Mr. Cedric Bucknall has submitted to us specimens of a Peziza which, in our opinion, approximates most closely to the species of Sowerby of anything we had previously seen. It was found growing between paving stones in an area at Bristol. In size attaining three-quarters of an inch in diameter. The disc orange red, but...
Page 46 - The spark is most vivid when the chrucoal is hot." parison of the action of the transmitting part of the instrument with that of the human ear upon which it was founded. The author says : " How could a single instrument reproduce at once the total action of all the organs operated in human speech? This was ever the cardinal question.
Page 140 - If you set it, The cats will eat it ; If you sow it, The cats will know it.
Page 49 - ... curved lever. Conducting wires, by means of which the current of electricity entered and left the apparatus were affixed to screws in connection respectively with the support of the pivoted lever and with the vertical spring. If now any words or sounds of any kind were uttered in front of the ear, the membrane was thereby set into vibrations, as in the human ear. The little curved lever took up these motions precisely as the "hammer "-bone of the human ear does ; and, like the " hammer "-bone,...
Page 30 - States, see p. 229.] local influences, gradually less marked toward the habitat of another form, with which it thus intergrades ; and all forms which certainly intergrade, no matter how widely distinct the opposite extremes may appear (eg, Colaptes auratus and mexicanus), together with iutergrading forms whose peculiarities are not explained by any known "law" of variation, have been reduced to snbspecific rank.
Page 147 - Sepultaria, and not of Scutellinia. The figures given by Sowerby represent the species very well except that the disc is hardly so bright. All circumstances considered, we feel satisfied that it is most probable this is really the missing species.

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