Double Scales, Systematically Fingered

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The fingering of a right-hand scale having a given number of sharps corresponds to that of a left-hand scale having the same number of flats, and vice versa. For the fingering to be precisely similar, the hands must move in contrary directions. For example: If the following two scales are played together, the black and White keys will be found to follow each other in the same order, and the same fingering Will be used in both hands.