to make a barrier between the two; Mitis pushes it back with his paw, but soon perceives the difference between the two bodies which he is pushing against, gives over his excitement, and looks out for another teat. No doubt in this case there was no comparative perception of difference, but different sensations producing different muscular actions; that is all, I imagine, but this is nevertheless the germ of veritable comparison.
19th May—Both the eyes of both kittens are about to open; the eyelids seem slightly slit, and are covered with an oozy film. At the external corner of Mitis’ right eye there is a little round opening disclosing a pale blue speck of eyeball, the size of a pin’s head. At the internal commissure of the left eye there is also a round opening, but much smaller, and showing no eye-ball through it. Riquet’s right eye is also opening slightly; the edges of the left eyelids are stopped up by a yellowish discharge.
I fancied that Mitis was playing in the box; I tumbled him over on his back, tickled his stomach, and stroked his head ; he struck out his paws without attempting to pick himself up; this was evidently a more or less conscious attempt at play. His mother came to lick him in this attitude, and he performed with his fore-paws as previously. Riquet, too,
