These little lizards are easily procured; and I trust the perusal of these memoirs may induce some kind and patient individual to try them as pets, when it will be found that their sense of hearing and intelligence is in no way exaggerated. Lizards cast their skins at uncertain intervals during the summer, being greatly influenced by temperature. One very warm season, when they were much in the sunshine, mine changed their dress on an average once in three weeks. Some of the sloughs came off entire, even to the tips of the tiny, delicate fingers, like a perfect glove. Sometimes they were shed in fragments. The head shields are not regularly renewed with the skin, which was always reversed. _Anguis fragilis_ on one occasion cast its skin entire and unreversed, a very unusual occurrence. All begin at the mouth, as snakes do; and you will see when the process is about to commence by the little creatures rubbing their mouths and their heads against whatever they are near, the loosening cuticle no doubt causing irritation. To watch the process is exceedingly interesting, especially when the lacertines free their limbs of the old garment, shaking off and dragging themselves out of it as you get off a tight sleeve. A word about the voice of lizards, on which so much has been written. That these do utter a sound is certain; but it is very feeble; though, perhaps, in comparison with their size, not more feeble than the hiss of a snake. And only when much disturbed and annoyed do they ejaculate even this little sound, which is as if you half pronounced and whispered the letter _t_ or _th_. Sometimes it resembles _ts_, only audible when quiet prevails. Both the lizards and the slow-worms expressed their displeasure by this same little expulsion of breath, scarcely to be called a hiss. But once when a slow-worm fell from a high stand to the floor, there was a singular sort of loud chirp or chuckle, as if the breath were forced suddenly from the lungs by the fall. It was wholly unlike its regular ‘voice,’ and was so remarkable, that if it had not been ejaculated simultaneously with the ‘flop’ on the carpet that announced ‘Lizzie’s’ fall, I might have thought a young bird or a frog was in the room. The slow-worms often got out of their cage and fell to the floor, seeming to be none the worse; but only on this one occasion did I hear the breath escape so audibly.