Orangeburg County is bounded as follows: on the north and northeast by Calhoun and Clarendon Counties from which it is separated by the Santee River and the line of Calhoun County; on the southwest by Berkeley and Colleton Counties from which it is divided by a line drawn S. 52? W. from Nelson’s Ferry, on the Santee River, to Matthews’ Bluff, on the Savannah River; on the southwest by Barnwell and Bamberg Counties from which it is separated by the South Edisto River; on the northwest by Aiken and Lexington Counties from which it is divided by a direct line drawn from A. J. Weathersbee’s old mill, on the line between Barnwell and Aiken Counties, to the point where the Cedar Pond Branch empties into the North Fork of the Edisto, and by another direct line, drawn from said point where the Cedar Pond Branch empties into the North Fork of the Edisto, to the headwaters of the main branch of Beaver Creek; thence down said creek to the line of Calhoun County; thence along said line to the Santee River; provided, that the county lines of Berkeley County and of Orangeburg County are hereby so altered as to cut off from said Berkeley County and to transfer and annex to and incorporate within said Orangeburg County all of that certain territory or portion of Berkeley County embraced within the following lines and boundaries, to wit: beginning at a point located on Four Holes Swamp at the intersection of the boundary lines of Orangeburg, Dorchester and Berkeley Counties, and extending in a southeasterly direction, along Four Holes Swamp, the same being the boundary between Dorchester and Berkeley Counties to a large cypress which stands at the confluence of Four Holes and Dean Swamps at the upper part of Turkey Lake; thence up and along the run of Dean Swamp as it meanders to a point where Dean Swamp and Black Creek unite; thence up Black Creek to the point where Big Black Creek and Little Black Creek unite; thence up Little Black Creek to the point where the "new road" crosses said Little Black Creek; thence northerly up the "new road" to the Monck’s Corner public road, near the place now or formerly Mark Richardson’s; thence north 10 chains to a pine; thence N. 14? E. 38 chains to a stake; thence S. 37? 15′ E. 49 chains to a stake; thence east 9.70 chains to a stake; thence north 39.50 chains to a stake; thence N. 87? E. 34 chains and 10 links; thence north 54.5 chains to a stake; thence N. 1? 30′ W. 18 chains and 60 links to a stake; thence N. 30? W. 31 chains to a stake; thence N. 8? W. 11 chains to a cypress at the river road and Rock Creek Bridge; thence northeast along Rock Creek to where Rock Creek empties into the Santee River; thence up the Santee River to the mouth of Eutaw Creek where the Orangeburg and Berkeley lines connect; thence southwest along the boundary line between Orangeburg and Berkeley Counties to the point of beginning.