“ At present the bank extends a little farther northward than it did when the Powell survey was made. These changes all resulted from the natural and gradual processes of accretion and erosion, which are rather pronounced in Red River. Its currents and channels shift from one side of its wide bed to the other, gradually cut away one bank and build up the other, and later on reverse that action. Where, as here, a boundary bank is changed by these processes the boundary, whether private or public, follows the change. ”

“ The claimants are T. P. Roberts and A. H. Britain on the one hand and the Durfee Mineral Company on the other. Both claims are founded on Texas surveys-that of Roberts and Britain on the Lewis Powell survey made in 1861 and patented in 1868, and that of the Durfee Mineral Company on the A. A. Durfee survey made in 1886 and patented in 1889.
The principal question is whether the Powell survey extended northward to the south bank of Red River, leaving nothing between it and the bank, or stopped short of the bank, leaving a narrow wedge-shaped strip between it and the bank. ”

“ His field notes described all as 'on the south bank of Red River,' and the drawings or plats accompanying the field notes represented all as fronting on the river and having its irregular line as a northerly boundary. The field notes of all, excepting the Powell, also described the northerly line as beginning at the northwest corner of the adjoining survey on the east and running 'thence up the river with its meanders' in a stated direction a given distance to a stake or mound 'in the bottom' or 'on the bluff' at the other end. ”