Lords of Finance by Liaquat Ahamed (pg. 43)

In the middle of the crisis, Germany was hit by a financial panic. The stock market plunged by 30 percent in a single day, there was a run on banks across the country as the public lost its nerve and started cashing in currency notes for gold, and the Reichsbank lost a fifth of its gold reserves in the space of a month. Some of this was rumored to have been caused by a withdrawal of funds by French and Russian banks, supposedly orchestrated by the French finance minister.