colour, between dirty grey and light brown. Their expression is frank and sympathetic ; they seem to direct their looks consciously and voluntarily.
Riquet is looking at me with an expression of pleasure, seated upright, with his paws lifted languidly. I hold my finger near him, and he extends his left paw. I stroke the left side of his head, and he leans the part which I caress on my finger, as a full-grown cat would do, and rubs himself two or three times running against my finger. These are invented movements—I mean movements furnished all of a sudden by the stimulus of hereditary virtualities, and which seem to astonish the young animal as well as to please him; it is thus that we see automatic movements at one moment coming under the control of consciousness, and the next escaping from it, refined, simplified, adapted, and perfected. Life invents but few new movements; but there are many, no doubt, ready to appear if the influences of surroundings permitted it.
29th May.—They are learning more and more to exercise their muscles and perfect their movements; they are daily acquiring fresh powers and adaptations, and in their games with each other and their mother they show intention and pleasure; they are learning more and more to distinguish people; if any
