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THE ACTIONS AND INACTIONS.
VIII. Freedom of the Wrist and Hand horizontally— —isolation of the muscnlar act that moves the hand to one side laterally, from the act that moves it in the opposite direction ; required to assist the thumb in turning- under, and the fingers in turning over.1
IX. Ability accurately to time the cessation of the doion-exer-tion of the Finger, employed during key-descent—
—ability to " aim " this exertion, so that it may culminate and cease at the moment of sound emission.2
X. Ability accurately to time the cessation of the down-exertion, of the Hand, employed during key-descent—
—ability to aim the hand-exertion, so that it may also be directed by the ear, like that of the finger.3
XI. Ability accurately to time the cessation of Weight, em-ployed to produce tone—
—ability to time the application of any Arm-weight employed for the creation of key -descent, so that it may culminate and cease at the moment of sound emission.4
XII. Freedom in the movements required of the Finger, the Hand, the Fore-arm and the Upper-arm in bringing t/te fingertips into place over their required notes, antecedent to the act of key-depression—
—freedom in the lateral, or side-to-side movements : (a) of the Fingers and Thumb, (b) of the Hand, (c) of the Fore-arm, with the elbow as a pivot, and (d) of the Elbow and Upper-arm itself.5
1 §§ 24 and 28, tide also " The Added Impetus" last chapter.
* § 24, vide The Added Impetus, last chapter.
* A cessation that must be caused, by the arm-supporting muscles acting In strict response to the timed cessation of the up-bearing action of the finger and hand aeainst the arm at the wrist, during the act of key •depression.*
* §§ 24 37. 38. and 39.
* § 24 iind liiht Chapter.