A part of the West half of the South East quarter of Section 13 in Township 17 North of Range 7 West of the 3rd Principal Meridian and bounded as follows (viz) Begining at the South East corner of said half quarter. Thence West, with the Southern boundary line, 10 chains and 7 links. Thence North 12 chains & 40 links to the centre of the channel of Rock creek. Thence down Rock creek with it's meanderings to the place where the line dividing the East & West halves of the above named quarter, crosses the same. Thence South with said dividing line to the begining. Containing 12 acres and 48 hundredths of an acre, more or less.