With regard to the use of gesture-signs by cats, I have given such cases as those of their imitating the begging of a terrier on observing that the terrier received food in answer to this gesture (p. 414); making a peculiar noise on desiring to have a door opened, which, if not attended to, was followed up by “pulling one’s dress with its claws, and then, having succeeded in attracting the desired attention, it would walk to the street door and stop there, making the same cry until let out” (p. 414); also of a cat which, on seeing her friend the parrot “flapping its wings and struggling violently up to its knees in dough,” ran upstairs after the cook to inform her of the catastrophe—“mewing and making what signs she could for her to go down,” till at last “she jumped up, seized her apron, and tried to drag her down,” so that the cook did go down in time to save the bird from being smothered. This gesture-sign of pulling at clothing, in order to induce one to visit a scene of catastrophe, is of frequent occurrence both in cats and dogs. Several instances are likewise given of cats jumping on chairs and looking at bells when they want milk (this being intended as a sign that they desire the bell pulled to call the servant who brings the milk), placing their paws upon the bell as a still more emphatic sign, or even themselves ringing the bell (p. 416). Concerning gesture-signs made by dogs (other than pointing), I may allude to a terrier which I had, and which when thirsty used to signify his desire for water by begging before a wash-stand, or any other object where he knew that water was habitually kept. And Sir John Lefroy, F.R.S., gave me a similar, though still more striking, case of his terrier, which it was the duty of a maid-servant to supply with milk. One morning this servant was engaged on some needlework, and did not supply the milk. “The dog endeavoured in every possible way to attract her attention and draw her forth, and at last pushed aside the curtain of a closet, and, although never having been taught to fetch or carry, took between his teeth the cup she habitually used, and brought it to her feet” (p. 466). Another case somewhat similar is given on the same page. Again, Mr. A. H. Browning wrote me:—“My attention was called to my dog appearing in a great state of excitement, not barking (he seldom barks) but whining, and performing all sorts of antics (in a human subject I should have said _gesticulating_). The herdmen and myself returned to the sty; we caught but one pig, and put him back; no sooner had we done so, than the dog ran after each pig in succession, brought him back to the sty by the ear, and then went after another, until the whole number were again housed” (p. 450).