Miss. Code Ann. § 19-1-73

Lamar County is bounded and described as commencing at the northwest corner of township five, north, range sixteen west; thence running south along the range line between ranges sixteen and seventeen to the thirty-first parallel of latitude, said point being the southwest corner of township one, north, range sixteen, west; thence east along the said thirty-first parallel of latitude to the southeast corner of township one, north, range sixteen, west; thence north one mile to the north boundary line of Pearl River county as it existed prior to the adoption of the Code of 1930; thence east, parallel with said thirty-first parallel of latitude, to the section line between sections twenty-seven and twenty-eight, township one, north, range fifteen, west; thence south to the thirty-first parallel of latitude; thence east to the northeast corner of section three, township one, south, range fifteen, west; thence south to the southeast corner of section three, township one, south, range fifteen, west; thence east along section lines to the section corner common to sections five, six, seven, and eight in township one, south, range fourteen, west; thence north to the said thirty-first parallel of latitude; thence east to the center or half-section line of section thirty-two of township one, north, range fourteen, west; thence north on half-section line of section thirty-two, township one, north, range fourteen, west, to the south line of section twenty-nine; thence east along section lines to the range line between ranges thirteen and fourteen, west; thence north along said range line to the northeast corner of township four, north, range fourteen, west; thence west to the northwest corner of said last mentioned township; thence north along the range line between ranges fourteen and fifteen to the northeast corner of township five, north, range fifteen, west; thence west twelve miles to the point of beginning. The county site is Purvis.