Historical jurists have maintained their theory on the basis of two propositions: (1) The conception of private property, like the conception of individual personality, has had slow but steady development from the beginnings of law; (2) individual ownership has grown out of group rights just as individual interests of personality have been disentangled gradually from group interests. Let us look at each of these propositions in some detail. If we examine the law of property analytically, we may see three grades or stages in the power or capacity which men have of influencing the acts of others with respect to corporeal objects. One is a mere condition of fact, a mere physical holding of or physical control over the thing without any other element whatever. The Roman jurists called this natural possession. We call it custody. Writers on analytical jurisprudence regard it as an element of possession. But this natural possession is something that may exist independently of law or of the state, as in the so-called _pedis possessio_ of American mining law, where, before law or state authority had been extended to the public domain in the mining country, the miners recognized the claim of one who was actually digging to dig without molestation at that spot. The mere having of an object in one's actual grasp gives an advantage. But it may be only an advantage depending on one's strength or on recognition of and respect for his personality by his fellow men. It is not a legal advantage except as the law protects personality. It is the physical person of the one in natural possession which is secured, not his relation to the thing held. Analytically the next grade or stage is what the Romanist calls juristic possession as distinguished from natural possession. This is a legal development of the extra-legal idea of custody. Where custody or the ability to reproduce a condition of custody is coupled with the mental element of intention to hold for one's own purposes, the legal order confers on one who so holds a capacity protected and maintained by law so to hold, and a claim to have the thing restored to his immediate physical control should he be deprived of it. As the Romanist puts it, in the case of natural possession the law secures the relation of the physical person to the object; in juristic possession the law secures the relation of the will to the object. In the highest grade of proprietary relation, ownership, the law goes much further and secures to men the exclusive or ultimate enjoyment or control of objects far beyond their capacity either to hold in custody or to possess--that is, beyond what they could hold by physical force and beyond what they could actually hold even by the help of the state. Natural possession is a conception of pure fact in no degree dependent upon law. The legally significant thing is the interest of the natural possessor in his personality. Possession or juristic