The bill seeks a decree locating and establishing a portion of the boundary line of Louisiana and Mississippi, between Willow Point and adjacent premises in the former, and lands in township 9 north, range 8 west, in the latter state, where the Mississippi river forms what is known as Albemarle Bend.

In 1823 the thread of the navigable channel of the river was the true boundary line, and is correctly located by surveys made by the Mississippi River Commission in 1823 and 1824. At that time the territory now in dispute was within Mississippi, and consisted of an island (then known as Tullos Island, which lay to the east of the thread of the river, and was separated from the Mississippi mainland by a chute) and certain portions of the mainland east thereof. Prior to 1882 the island was renamed 'Island No. 98.'

Louisiana v. Mississippi (282 U.S. 458)/Opinion of the Court

That between 1823 and 1913 erosions occurred which ate away all of Tullos Island and large portions of the Mississippi shore.

Louisiana v. Mississippi (282 U.S. 458)/Opinion of the Court

That accretions attached to the Louisiana shore.

Louisiana v. Mississippi (282 U.S. 458)/Opinion of the Court

That the river, and consequently the interstate boundary line, gradually and imperceptibly moved eastwardly and northwardly a distance of five or six miles.

That the accretions to the Louisiana shore became the territory of complainant; That in 1912-1913 the river suddenly changed its course, cut across the bar formed by the said accretions on the Louisiana side, and by avulsion formed a new channel to the west, severing from the Louisiana shore a large portion of the accretion theretofore formed.

That, as the last change was by avulsion, the boundary line remained and now is at the thread of the extreme easterly and northeasterly channel of the river as it was in 1912-1913.

The Mississippi River Commission surveyed the river in 1882, and admittedly its chart made from that survey correctly shows the shore lines and bar lines and other relevant data as of that year. A further survey was made by the Commission, and a plotting taken therefrom in 1894, and a similar survey and plotting shows the river as it was in 1912-1913. These demonstrate that the river had moved to the eastward from its position in 1823, each survey placing it considerably east of its location at the time of the next earlier one.

That the complainant has failed to show how the change in the channel came about between the surveys of 1823-1824 and that of 1882.

That as complainant has the burden of showing that the change took place by accretion rather than by avulsion, and has failed to carry that burden, it can make no claim for the land added to the Louisiana shore prior to 1882.

That subsequent to 1882 the river above the point in controversy cut into the Louisiana bank above and along the northern border of Willow Point, was deflected in a northeasterly direction, so that instead of striking Tullos Island it curved around the head of what then remained of the island (as it is shown on the survey of 1882) and enlarged the chute between that island and the Mississippi shore, forming a new channel there.

That subsequently the old channel, which had run to the west of the island, filled up, and thereby the island became attached to the Louisiana shore.

That the new channel running to the north and east of what was left of Tullos Island added by accretion to the easterly side of the island and cut farther into the Mississippi shore until 1912-13, when the river suddenly abandoned the new channel and returned to the old 1882 channel.

That thereby what theretofore had been Tullos Island again became an island separated from the Louisiana shore, although greatly enlarged over its dimensions in 1882 by the accretions added to its easterly side.

As an additional and alternative defense Mississippi asserts that its title to the disputed territory cannot now be assailed because of long-continued possession and exercise of soverignty and dominion, with the acquiescence of Louisiana.

On the issues thus made testimony was taken before a commissioner, and was referred to Thomas G. Haight, a member of the bar of this court, as special master, with direction and authority to report his findings of fact, conclusions of law, and recommendations for a decree. He has filed his report, recommending a decree in accordance with the contentions of the complainant. The respondent has filed exceptions.

The parties are in agreement as to the applicable legal principles. The exceptions raise no questions of law, but go solely to the correctness of the master's fact findings and conclusions. We have therefore examined the proofs, consisting of documentary evidence and oral testimony, to determine whether the master's findings are in accord therewith. In brief he finds: