Collier's New Encyclopedia (1921)/Aarau
AARAU (ä′rou), a town in Switzerland, capital of the canton of Aargau, on the right bank of the Aar. Has manufactures of scientific instruments, silk, cotton, leather, and bells, a library, and historic, scientific, and ethnographic museums. Here, in December, 1797, the ancient Swiss confederacy held its last session; from April to September, 1798, it was capital of the Helvetic republic. Pop. about 10,000.