MUfNKAPOLIs, Mimi., July 18. - The flour mili owned by Christian Bros. & Co. was damaged by flre Friday night to the extent of S7ö,0OO.. The cause of the fire is unknown, but it origínate d in the dust room, which was destroyed. The maan damage is eaused by watqr. The mili had a capacity of 2,500 barrels.