of finding the owner. Such animals always belong to their original owner as long as he can assert his ownership over them, in the same way as his household furniture belongs to him. Wild animals which enjoy their natural liberty and go where they please belong as a general rule to him who first captures or kills them. Such a one makes them his own by occupation, for before he took them they belonged to no one. English law has modified this general rule to some extent, for if a trespasser capture or kill a wild animal on another person's land, it belongs to the owner of the soil on which it has been started and killed; if a trespasser start an animal on one person's property and kill it on another's, it belongs to the owner of the former. These rules of positive law give the owner of the property at least the right to vindicate his claim, which cannot then be lawfully resisted by the trespasser.
Animals which have been tamed, such as pigeons, bees, young pheasants that have been hatched under hens, belong to their owner as long as they retain the habit of returning to his premises, but if they lose that habit and recover their natural liberty, they belong to the first who takes them, like wild animals. Animals which are enclosed like deer in a park, rabbits in a warren, or fish in a pond, belong to the owner of the enclosure, as long as he can exert his control over them. If they recover their natural liberty, they are primi occupantis.
A poacher may be guilty of sin by damaging the property of another by trespassing on it, and from the fact that he exposes himself to grave personal risk or to the danger of violently resisting lawful authority if he is caught. By the mere fact of capturing wild animals he does not commit a sin against justice, unless he kills so many in a particular property that the right of killing game therein is seriously lessened in value, and the owner in consequence suffers considerable loss, because, for example, he cannot let it at so high a price.
SECTION II
On Accession
i. Accession is the increase of property either by natural production or by the union of one thing with another. When this takes place, legal and moral questions arise as to the owner of the increase. There are two leading maxims which settle such questions, Res fructificat domino and Accessorium sequitur principale. The maxim Res fructificat domino seems to follow necessarily from the nature of property and ownership, for he
