- The Second Battle of Lemberg begins. Russian forces capture Lemberg (also known as Lviv), the fourth largest city in Austria-Hungary (modern-day Ukraine). The Battle lasts 9 days, ending on 11 September.
- The French Government informs the United States Government that they will observe the “Declaration of London” subject to certain modifications
- The torpedo gunboat HMS Speedy is sunk by a mine in the Humber estuary off the east coast of Northern England