∗ The operator must recollect the usual rule, to put before the number found in the table, another number, being one less than the number of figures in the vibration number.Google Scholar

∗ Diagrams of a similar nature, contributed by the author of this paper, will be found in an appendix to Sir F. A. G. Ouseley's Treatise on Harmony. Although our modern musical scale may be taken to be constructed on harmonic principles, as here laid down, yet it must not be forgotten that a scale very similar was in use for centuries before what we now call harmony had any practical existence. The origin of this ancient melodic series of notes involves some very interesting but abstruse speculations, which it would be impossible to introduce here.Google Scholar