Beginning at the southeast corner of section thirteen, township thirty-two, range eighteen; thence west with the subdivisional line to the southwest corner of section eighteen, township thirty-two, range nineteen; thence south with the range line between ranges nineteen and twenty to the southeast corner of section twelve, township thirty-one, range twenty; thence west with the subdivisional lines to the southwest corner of section seven, township thirty-one of range twenty; thence north with the range line between ranges twenty and twenty-one to the northwest corner of township thirty-six, range twenty; thence east with the township line between townships thirty-six and thirty-seven to the northeast corner of township thirty-six, range eighteen; thence south with the range line between ranges seventeen and eighteen to the place of beginning.