. Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics. THROUGH THE AIR. 145 travelling at a high speed (as, the artificial currents pro-duced by the rapidly reciprocating action of the wing). Theresult is the same in both cases, inasmuch as a certain quan-tity of air is worked up under the wing, and the necessarydegree of support and progression extracted from it. It is,therefore, quite correct to state, that as the horizontal speedof the body increases, the reciprocating action of the wing de-creases ; and vice versa. In fact the reciprocating and non-
. Animal locomotion or walking, swimming, and flying : with a dissertation on aëronautics. THROUGH THE AIR. 145 travelling at a high speed (as, the artificial currents pro-duced by the rapidly reciprocating action of the wing). Theresult is the same in both cases, inasmuch as a certain quan-tity of air is worked up under the wing, and the necessarydegree of support and progression extracted from it. It is,therefore, quite correct to state, that as the horizontal speedof the body increases, the reciprocating action of the wing de-creases ; and vice versa. In fact the reciprocating and non-reciprocating action of the wing in such cases is purely amatter of speed. If the travel of the wing is greater than thehorizontal travel of the body, then the figure-of-8 and thereciprocating power of the wing will be more or less perfectlydeveloped, according to circumstances. If, however, thehorizontal travel of the body is greater than that of thewing, then it follows that no figure-of-8 will be described bythe wing j that the wdng will not reciprocate to any marked if :->* -* \.
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