The natural principles and analogy of the harmony of form (1842)
Hay, D. R. (David Ramsay), 1798-1866 · Edinburgh, W. Blackwood · leaf 62
ns in a second affected a certain classof those particles particularly, while the other two were affected subordinately,producing the harmonics, and that the secondary or intermediate notes wereproduced by two of these classes of particles being simultaneously and equallyaffected. These particles… … PLATE II
Geometrical drawing · Proportion (Art)
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