"Every perception is to some degree an act of creation, and every act of memory is to some degree an act of imagination."
-- Gerald Edelman, Second Nature: Brain Science and Human Knowledge
2 Of Colours.1 Of SoundsThe Newton Project Knowledge Graph2020-10-08Journal1 Of Sounds
A man may heare the beatings of his owne pulse.
In every sound the eight above it but not below it seemes to bee heard. (for there is some more subtile, some more grosse matter in the aire, & the subtilest matter is prone to quickest vibrations, though the motion of both proceede from the same cause, as the vibration of a string or pipe thus twiggs vibrate ofter than branches. Also these motions doe least check one the other & are most congruous to the string or pipes motion when the ones vibrations are double in number to the others. Hence a sound & its eight are never seperate. The greatest & grossest part of the matter in the aire doth comply with the strings motion for one string struck by the mediation of the air moves an unison string of another instrument better than that which is an Eight above or below it & the string is easliest moved by the air when its motion can be most comformable to the motion of the greatest parte of the aire. Nor can any considerable quantity of matter move slower than the string because it gives way to the strings motion & were there, yet its motion being 4 times slower than that of the subtilest matter can scarce bee perceptible. Hence each sound hath its concomitant 8th, & perhaps 15th & 22th to a good eare, above but not below it. Hence 8ths seeme to bee unisons. And violenter breathing raiseth the sound & sight or 15th not a 12th, or but seldom to a twelft.
1 Of Sounds