q wrote:from The Elements Of Notation, by Garner Read (Page 56)
... At the present time, however, none of these hybrid clef-signs is in common use, and
... the overlapping ranges of the four clefs in modern use.
* This clef-sign is to be found in some modern editions of music for soprano recorder.
When making such (very useful) quotes which relate to a certain "epoch", it may be useful to mention the date of writing...
My own little experience is that the 8va clef signs have become much more common use with computer-based score edition. While the human musician may have an implicit knowledge of which octave he's using, the computer playing the score needs a much clearer indication (on older scores, the 8vb mark for a tenor clef is generally omitted).
It could have been possible to make that the choice of an instrument implies a transposition and/or octave choice, but I feel this would have generated enormous confusion in a changing world.