We have an abundance of presumptive evidence that bees are endowed with _sensation_ and _perception_, and that the excitement of these faculties is communicated, through the medium of _nerves_, to a common _sensorium_, though the latter was denied to insects by Linnæus and other eminent naturalists. Common sensation, however, does not reside in the brain alone of insects, as in that of warm-blooded animals, but in the spinal marrow also; hence it is that bees and many other insects exhibit signs of sensation after their heads have been severed from their bodies. Some insects exhibit these for a long time afterwards, the wasp for instance; +Lyonnet+ informs us that he has seen motion in the body of a wasp, three days after its division from the head; and I have known several instances of its inflicting wounds with its sting, at least four-and-twenty hours after the separation. The severed body will not only move but walk, and sometimes even fly, at first almost as actively without the head as with it. The penetrating genius of +Lord Bacon+ afforded him such illumination upon this subject, as to enable him to approach very near to what is at this day regarded as a correct statement of the cause of this _protracted vitality_ in mutilated insects. "They stirre," says he, "a good while after their heads are off, or that they be cut in pieces; which is caused also for that their vital spirits are more diffused throughout all their parts, and lesse confined to organs than in perfect creatures."