Sentence:  There are continually springing up, however, advocates of new systems of <WSD>musicography</WSD> the adoption of which would reduce all our musical heir-looms to the level of waste paper, and most existing musical science and skill to the level of those of these advocates; for it is remarkable that no scheme for the reformation of <WSD>musicography</WSD> has ever been proposed by any person of acknowledged musical science or skill. 
Meaning of the word marked with <WSD> tags:  The art or science of writing (music) and of musical (notation).