The board of county commissioners in each county in the State of Oklahoma is hereby authorized and empowered to call any election for the purpose of issuing bonds to purchase lands, make improvement thereon, or to make improvements upon lands already owned by such counties, for the use and benefit of the poor people of such counties. Said commissioners shall call said election by issuing a proclamation therefor and giving notice thereof in four consecutive issues of a weekly newspaper published in and of general circulation in such county proposing to issue said bonds. Provided, that no election shall be held until the expiration of thirty (30) days following the date of the first publication of said notice.