sentences:  The initial town survey of Adelaide was completed in March 1837.By February 1839 the surrounding country from coast to foothills up to present-day Grand Junction Road had been surveyed into country sections, with between a quarter and a half having already been claimed by the early investors or purchased by early settlers.The country sections delineated in the early land surveys generally formed the hundred sections when the first hundreds were proclaimed in 1846 (Adelaide, Yatala and Noarlunga).