—muscular, visual, tactile, and thermal—which I had occasioned them. Standing and walking about on my hand had stimulated Mitis to an extraordinary display of strength. In his desire for prolonged exercise, and no doubt also wishing to renew the vivid sensations of light he had just experienced, he set to work to climb up the perpendicular wall of his dwelling, making all the time a great noise of scratching. All movement produces sensations; and all sensations produce movements.
26th May.—They both play with their paws and their muzzles, but frequently, as if by chance, only without very marked intention, and with very uncertain movements.
I seem already to distinguish in them two different characters. If one can go by appearances, Mitis will be gentle, patient, rather indolent and lazy, prudent and good-natured; Riquet, on the contrary, lively, petulant, irritable, playful, and audacious. Noise and contact seem to excite him more than his brother. But both of them are very affectionate towards their mother, or perhaps I should say very appreciative of the pleasure of being with her, of seeing, hearing, and touching her, and not only of sucking from her.
I hold Mitis up to the edge of the box; he evinces a desire to get back to his mother, but does not know how to manage it. His muscles
