Baby powder that came in contact with a space heater was determined to be the cause of a house fire Wednesday near the corner of 15th Street and High Avenue in Bremerton. The fire was reported at about 2:10 p.m. Passersby Gaylord and Carol Jackson saw flames coming from the second floor of the house. He summoned help, while she hammered on the door to rouse the occupant. Bremerton Fire Department crews had the fire under control in about 20 minutes, Fire Marshal Mike Six said. The blaze was confined to the second story, but the downstairs had significant water damage.