I have little to add to what I previously said (and to what White has said) as to Tortoise habits and manners. These appear to be very uniform, and to be guided by a most definite instinct; and it is very noticeable and very remarkable how the two Tortoises will constantly both do the very same thing at the very same time, often almost at the same moment of time. For example, when feeding, even when apart from each other, they will constantly suddenly leave off eating almost at the same instant; or they will in like manner, when basking in the sun, both at once get up and walk off to some other place; or they will both all at once suddenly get up and march off to their evening place of shelter and rest—and this without any definite atmospheric or other cause that is appreciable. Cuvier has well called the Tortoise “_un animal retournèe_,” an animal inverted, or “turned inside out, or rather outside in.” And it is said that the large Land Tortoise, when withdrawn into its shell, “can defy the whole animal world except man, from whom nothing is safe.” And with reference to this point I have observed that our Tortoises, when retiring to rest, always take the greatest care to protect their noses and the anterior opening of their shells. When they burrow, their head is of course covered up by the earth. But when, as is often the case in the warmer weather, they simply go to sleep in some sheltered place, they habitually place their heads close against the wall, or under the projecting roots of a tree or shrub, so as not to leave this part exposed. I presume, therefore, that they are conscious of some insecurity, and it would certainly appear that their heads would otherwise be open to the attack of rats or other predaceous animals. Professor Forbes describes the peculiar way in which he has in Greece observed the Tortoises to do their courting, _i.e._ the method by which the male Tortoise seeks to attract the attention of his lady-love, namely, by repeatedly knocking his shell violently against hers. I have noticed the same process in my own garden. Both my animals are, I believe, males. But I have observed one of them, when in an amorous humour, to strike the other several times in succession a sounding blow on its shell; and this he does by suddenly withdrawing his head into his shell, so as to be out of harm’s way, and then as suddenly throwing his body forward by a sort of butting process against the shell of his fellow. This proceeding causes a very considerable, and indeed, comparatively speaking, quite a loud and resounding noise; and at first sight these sudden and severe blows would appear to be more calculated to cause corporeal discomfort or injury than to excite affection. These very marked attentions are usually followed by the utterance of a quick and soft, or almost whining cry. I will only add that my Tortoises show an increasing familiarity and sense of being at home as years roll on.