Morning mist, cooler temperatures, and calmer winds helped slow the spread of the Cougar Creek Fire north of Glenwood and allowed firefighting crews to bring 15 percent of the line under containment.  The fire grew by 200 acres on Sunday to 22,500 acres.  Line building efforts Monday are focused on the southeast finger of the fire to pinch off the front that was advancing toward Glenwood.  Resources are also being directed to the north end of the fire to keep it from reaching Big Muddy Creek, while preservation of an irrigation flume off Bacon Creek on the east remains a priority.  Heavy use of air resources will continue.  Residents north of Ladiges Road remain under a Level 1 evacuation advisory, while all Washington State Department of Natural Resources lands and recreation sites within the Glenwood block and the south climb and all other trails on the south and east sides of Mt. Adams between Forest Road 23 at Williams Mine to the eastern boundary of the Gifford Pinchot National Forest are all closed.  A public meeting on the lightning-caused fire is set for Monday at 5 p.m. at Trout Lake School.