Detroit, June 26.- Firestarted inthe basement of a two-story frame house ■ on Miller Street near Sixth Sunday afternoon and a high west wind aided in spreadingf the flames. Before they were controlled seven houses were destroyed. The wind carried sparks three bloeks away and set fire to another house which %vas also destroyed. The total loss is $15,000, with about $7,flOO insurance. The fire was the work of an incendiary.