29 April 1915; Thursday

At work as usual. Busy all day. Finished late.

Germans using poisonous gases1  2 & made an advance near Ypres at this time.

  1. The first successful, large scale use of gas was in the German attack at Langemarck in the NW. angle of the Ypres Salient, on 22 April; initially against French African troops, but Canadian and British troops were soon involved. German prisoners had given detailed accounts of the preparations, but the French Corps commander, Balfourier, would neither believe the warnings nor transmit them to the British. 

  2. See also: Wikipedia: Chemical weapons in World War I and Wikipedia: Second Battle of Ypres