Plaintiff recovered a judgment' of $10,000 against the city of Detroit. He brought garnishment proceedings against the Commonwealth-Commercial State Bank, which disclosed an indebtedness to the city of Detroit in the sum of $1,465,987. The only question is whether garnishment proceedings will lie. The rule in this State is fixed by statute (3 Comp. Laws 1915, § 12970). The method of collecting judgments against cities is by mandamus to compel *67the proper city authorities to spread the tax to pay them. Griswold v. Common Council of Ludington, 117 Mich. 317.

Judgment is reversed.