The locust undoubtedly possesses

TCD MS 10515 folio 89 recto

TCD MS 10515 folio 89 recto

I removed the antennae from one individual, and enclosed another in a tin box which I turned about in every direction to see if it would confuse the directive sense. But both locusts, in being released, joined their fellows and flowed onward in the stream. The antennae, therefore, are not the directive organs nor will rotation of a locust confuse its directive sense. The locust undoubtedly possesses an acute sense of smell. If a few freshly killed locusts are hidden beneath a handful of grass and placed in the line of the advancing stream, then many of the locusts that pass within a distance of six inches turn their dead concealed companions will suddenly stop, turn inwards and then creep slowly toward the grassy tuft. I can conceive no sense but that of smell by which they could