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angle animal appears ball barometer beginning bird body called canal centre changes circle circumstances colour common conductor consequently considerable considered contained continued covered described diameter direction discharge distance earth effect electricity equal experiments extremely feet figure fire fish fixed fluid force give given glass greater half hand head heat height inches increased Italy kind least length less light limb manner matter means measure mentioned method middle motion move nature nearly never observed particle particular passed perhaps person piece plate position present probably produced proper proportion quantity reason received remained remarkable respect round salt says seems seen side sine space species substance sun's supposed surface taken thermometer thick thing trees upper Venus whole wire
Página 10 - It had a first and second part, which, together with the symphonies was of the length that opera songs generally last: if this extemporary composition was not amazingly capital, yet it was really above mediocrity, and showed most extraordinary readiness of invention.
Página 435 - Barrington was of opinion that " notes in birds are no more innate than language is in man, and depend entirely on the master under which they are bred, as far as their organs will enable them to imitate the sounds which they have frequent opportunities of hearing.
Página 61 - I am not satisfied with the doctrine that supposes particles of matter, called light, continually driven off from the sun's surface, with a swiftness so prodigious! Must not the smallest particle conceivable have, with such a motion, a force exceeding that of a twenty-four pounder discharged from a cannon? Must not the sun diminish exceedingly by such a waste of matter; and the planets, instead of drawing nearer to him, as some have feared, recede to greater distances through the lessened attraction?
Página 467 - I rejoice in addressing these communications to you. He who predicted and showed that electricity wings the formidable bolt of the atmosphere, will hear with attention that in the deep it speeds a humbler bolt, silent and invisible. He who analyzed the electrified phial will hear with pleasure that its laws prevail in animal phials.
Página 216 - ... varying according to the same power of the distances. Or, to express it more concisely, if you look upon the electric fluid as matter of a contrary kind to other matter, the particles of all matter, both those of the electric fluid and of other matter, repel particles of the same kind, and attract those of a contrary kind, with a force inversely as some less power of the distance than the cube.
Página 61 - ... exceeding that of a twenty-four pounder discharged from a cannon? Must not the sun diminish exceedingly by such a waste of matter; and the planets, instead of drawing nearer to him, as some have feared, recede to greater distances through the lessened attraction? Yet these particles, with this amazing motion, will not drive before them, or remove the least and lightest dust they meet with. And the sun, for aught we know, continues of his ancient dimensions, and his attendants move in their ancient...
Página 651 - TV of an inch in diameter. On the upper end of the leg AB, there is a tube of latten brass, which is kneed or bent perpendicularly outwards, and has its mouth open towards F. On the other leg CD is a cover, with a round hole G in the upper part of it, f5ths of an inch in diameter.
Página 435 - ... tune with precision, but knows that he can execute them. What the nestling is not thus thoroughly master of, he hurries over, lowering his tone, as if he did not wish to be heard, and could not yet satisfy himself. A young bird commonly continues to record for ten or eleven months, when he is able to execute every part of his song, which afterwards continues fixed, and is scarcely ever altered. When the bird is thus become perfect in his lesson, he is said to sing his song round, or in all its...
Página 170 - Green and me; but the time it happened was not noted by either of us; it appeared to be very difficult to judge precisely of the times that the internal contacts of the body of Venus happened, by reason of the darkness of the penumbra at the sun's limb, it being there nearly, if not quite, as dark as the planet.