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Musical Notation
Patent for a notation which provides "a sheet in which the tones in their successive order of degrees by septenaries comprising the limit of the human voice from low to high pitch or from base to treble will be graphically indicated, and also to furnish a means whereby mechanical transposition of the notated characters may be effected" (lines 14-20).
Date:
September 13, 1892
Creator:
Robberson, John W.
System:
The Portal to Texas History