2 In order to support this action it is not necessary that the goods of which robbery has been committed should belong to the plaintiff, provided they were taken from among his property. Thus, if a thing be let, or lent, or pledged to Titius, or even deposited with him under such circumstances that he has an interest in its not being carried off--for instance, by his having undertaken the entire responsibility for its safe custody;--or if he possesses it in good faith, or has a usufruct or any other right in it whereby he suffers loss or incurs liability through its being forcibly taken from him, the action will be maintainable by him; not necessarily in order to restore to him the ownership, but only to compensate him for what it is alleged he has lost by its being taken from his goods or withdrawn from his means. In fact, it may be said generally that where, supposing property to be taken secretly, the action of theft will lie, the action on robbery will lie at suit of the same person, if it be taken with violence. TITLE III. OF THE LEX AQUILIA Unlawful damage is actionable under the lex Aquilia, whose first chapter provides that if a slave of another man, or a quadruped from his flocks or herds, be unlawfully killed, the offender shall pay to the owner whatever was the highest value thereof within the year next immediately preceding. 1 From the fact that this enactment does not speak of quadrupeds simply, but only of such quadrupeds as are usually included under the idea of flocks and herds, it is to be inferred that it has no application to wild animals or to dogs, but only to such beasts as can properly be said to graze in herds, namely horses, mules, asses, oxen, sheep, and goats. It is settled, too, that swine come under its operation, for they are comprehended in 'herds' because they feed in this manner; thus Homer in his Odyssey, as quote by Aelius Marcianus in his Institutes, says, You will find him sitting among his swine, and they are feeding by the Rock of Corax, over against the spring Arethusa.' 2 To kill unlawfully is to kill without any right; thus a man who kills a robber is not liable to this action, if he could in no other way escape the danger by which he was threatened. 3 So, too, where one man kills another by misadventure, he is not liable under this statute, provided there is no fault or carelessness on his part; otherwise it is different, for under this statute carelessness is as punishable as wilful wrongdoing. 4 Accordingly, if a man, while playing or practising with javelins, runs your slave through as he passes by, a distinction is drawn. If it be done by a soldier in his exercising ground, that is to say, where such practice is usually conducted, he is in no way to blame; but if it be done by some one else, his carelessness will make him liable; and so it is with the soldier, if he do it in some place other than that appropriated to military exercises.