Now after several burying‐beetles had, according to their custom, undermined the frog, it could not, as they expected, sink into the ground; after much perplexed running hither and thither they undermined the stick also. To this assistance rendered to instinct, and that repairing of the works of mechanical tendency, we find in the organism the _healing power_ of nature analogous, which not only heals wounds, replacing even bone and nerve substance, but, if through the injury of a vein or nerve branch a connection is interrupted, opens a new connection by means of enlargement of other veins or nerves, nay, perhaps even by producing new branches; which further makes some other part or function take the place of a diseased part or function; in the case of the loss of an eye sharpens the other, or in the case of the loss of one of the senses sharpens all the rest; which even sometimes closes an intestinal wound, in itself fatal, by the adhesion of the mesentery or the peritoneum; in short, seeks to meet every injury and every disturbance in the most ingenious manner. If, on the other hand, the injury is quite incurable, it hastens to expedite death, and indeed the more so the higher is the species of the organism, thus the greater its sensibility. Even this has its analogue in the instinct of insects. The wasps, for instance, who through the whole summer have with great care and labour fed their larvæ on the produce of their plundering, but now, in October, see the last generation of them facing starvation, sting them to death (Kirby and Spence, vol. i. p. 374). Nay, still more curious and special analogies may be found; for example, this: if the female humble‐bee (_Apis terrestris, bombylius_) lays eggs, the working humble‐bees are seized with a desire to devour them, which lasts from six to eight hours and is satisfied unless the mother keeps them off and carefully guards the eggs. But after this time the working humble‐bees show absolutely no inclination to eat the eggs even when offered to them; on the contrary, they now become the zealous tenders and nourishers of the larvæ now being hatched out. This may without violence be taken as an analogue of children’s complaints, especially teething, in which it is just the future nourishers of the organism making an attack upon it which so often costs it its life. The consideration of all these analogies between organised life and the instinct, together with the mechanical tendencies of the lower animals, serves ever more to confirm the conviction that the _will_ is the basis of the one as of the other, for it shows here also the subordinate rôle of knowledge in the action of the will, sometimes more, sometimes less, confined, and sometimes wanting altogether.