Читать книгу A Text-book of Entomology онлайн

152 страница из 232

“The long streamer-like hind legs of many water-bugs, for example Notonecta, approach more nearly our artificial oars. These legs are turned out from the bottom.

“There is no doubt but that the legs of insects, as regards the many-sidedness and exactitude of their locomotive actions, place the similar contrivances of other animals far in the shade. We shall be forced to admire these ingenious levers still more, however, when we take into consideration their energy and strength. That the force with which the locomotive muscles of insects is drawn together is enormous compared with that of vertebrates, we may learn if we try to subdue the rhythmical movements of the thorax of a large butterfly by the pressure of our finger or to open against the insect’s will the closed jumping leg of a grasshopper, or the fossorial shovel of a mole-cricket.”

LITERATURE ON LEGS AND FEET

ssss1

MacLeay, W. S.

Speyer, O.

Pokorsky Joravko, A. von.

Rossmassler, E. A.

West, Tuffen.

Sundevall, C.

Lindemann, C.


Правообладателям