The lines of cardinal importance are (I) the rasceta or cross sulci, which isolate the hand from the forearm at the wrist, and which are the flexion folds between the looser forearm skin and that tied down to the fascia above the level of the anterior annular ligament.
12 shows the figure-of-8 made by the margins of the wing in extension (continuous line), and flexion (dotted line).
The con flexion between Carthage and Phoenicia is more certain, and the ancient Abyssinian kingdom was founded by Semites from south Arabia.
One of the oldest of this large family of predictive systems is that of palmistry, whereby the various irregularities and flexion-folds of the skin of the hand are interpreted as being associated with mental or moral dispositions and powers, as well as with the current of future events in the life of the individual.
Although the figure-of-8 represents with considerable fidelity the twisting of the wing upon its axis during extension and flexion, when the insect is playing its wings before an object, or still better when it is artificially fixed, it is otherwise when the down stroke is added and the insect is fairly on the wing and progressing rapidly.
The muscles of the limbs are modified from those of the ordinary mammalian type in accordance with the reduced condition of the bones and the simple requirements of flexion and extension of the joints, no such actions as pronation and supination, or opposition of digits, being possible or needed.
From the language of the older period in sound, flexion and structure.
The subject has been reviewed by Erman, Die Flexion des dgyptischen Verbums in the Sitzngsberlchte of the Berlin Academy, 1900.
Gram., 1898; Erman, Flexion d.