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Roman Institutional Treatises, after giving their definition of the various forms and modifications of ownership, proceed to discuss the Natural Modes of Acquiring Property. Those who are unfamiliar with the history of jurisprudence are not likely to look upon these "natural modes" of acquisition as possessing, at first sight, either much speculative or much practical interest. The wild animal which is snared or killed by the hunter, the soil which is added to our field by the imperceptible deposits of a river, the tree which strikes its roots into our ground, are each said by the Roman lawyers to be acquired by us naturally. The older jurisconsults had doubtless observed that such acquisitions were universally sanctioned by the usages of the little societies around them, and thus the lawyers of a later age, finding them classed in the ancient Jus Gentium, and perceiving them to be of the simplest description, allotted them a place among the ordinances of Nature. The dignity with which they were invested has gone on increasing in modern times till it is quite out of