Each of these attitudes of the hand may be presented under three forms: the eccentric, normal and concentric.
Each of these forms as genera, produces three species; this gives the hand nine intrinsic attitudes, whose neutral signification will be specified and determined by the presentation of the hand upon the cube.
Let us first take the normal state as genus, and we shall have the normal hand as species in the normal genus. This will then be the normo-normal attitude.
By presenting the hand in pronation or supination horizontally, without spreading or folding the fingers, we shall have that attitude which signifies abandon.
Let us now take the eccentric species, still in the normal genus.
Raise the hand somewhat with a slight parting of the fingers, and we have the eccentro-normal hand, which signifies expansion.
Finally, let us consider the concentric species, still in the normal state.
Present the hand lifeless and you have the concentro-normal attitude, which signifies prostration.
Let us pass on to the concentric genus.
By closing the fingers with the thumb inward upon the middle one, we shall have the normo-concentric hand, which signifies the tonic or power.