The present Act lays down provisions relating to land survey. The Act contains at the outset a definition clause relating to various terms employed therein, such as “ascertainable point”, “broken concession”, “broken lot”, “irregular lot”, “regular lot”, “land”, “lost corner”, “last as side line”, “proofline”. Article 2 establishes that no survey of land for the purpose of defining, locating or describing any line, boundary or corner of a parcel of land is valid unless made by a surveyor or under the personal supervision of a surveyor.