Where the land was subject to private entry, June 1, 1840, and a settlement shall thereafter be made upon such land, or where the land shall become hereafter subject to private entry, and after that period a settlement shall be made, which the settler is desirous of securing, notice of such intention must be given within thirty days after such settlement; and, in all such cases, the proof, affidavit and payment must be made within twelve months after such settlement. The tracts liable to entry are embraced under the following designations: _First_, a regular quarter-section, notwithstanding the quantity may vary a few acres from one hundred and sixty; or a quarter-section, which, though fractional in quantity by the passage of a navigable stream through the same, is still bounded by regular sectional and quarter-sectional lines; _second_, a fractional section containing not over one hundred and sixty acres, or any tract being a detached or anomalous survey made pursuant to law, and not exceeding such quantity; _third_, two adjoining half-quarter-sections (in all cases to be separated by a north and south line, except on the north side of township, where the surveys are so made as to throw the excess or deficiency on the north and west sides of the township), of the regular quarters mentioned in the first designation; _fourth_, two half-quarter or eighty-acre subdivisions of a fractional or broken section, adjoining each other, the aggregate quantity not exceeding one hundred and sixty acres; _fifth_, a regular half-quarter and an adjoining fractional section, or an adjoining half-quarter subdivision of a fractional section, the aggregate quantity not exceeding one hundred and sixty acres; _sixth_, if the pre-emptor do not wish to enter one hundred and sixty acres, he may enter a single half-quarter section (made by a north and south line), or an eighty-acre subdivision of a fractional section; _seventh_, one or more adjoining forty-acre lots may be entered, the aggregate not exceeding one hundred and sixty acres; and, _eighth_, a regular half-quarter, a half-quarter subdivision, or a fractional section, may each be taken, with one or more forty-acre subdivisions lying adjoining, the aggregate not exceeding one hundred and sixty acres. Forty-acre tracts, or quarter quarter-sections, may be entered in the same manner that eighty-acre, or half-quarter sections, have been.