sufficient oxygen that does it. The temperature at 17,000 feet these days must be away below zero. We wear furlined suits and helmets and wool lined gloves and boots but still you feel chilly up there. If you run into a cloud at that height the dampness collects and forms a coating of frost on the metal parts of the machine. Still it is fine up there. Below you see the lines, the bursting of shells, the flash of big guns and the whole country spreads out like a huge map. Half way up from the "floor" artillery observation busses skim to and fro, followed by little black clouds which seem to spring into existence in the wink of an eye. The clouds are the bursting of the anti-aircraft guns H.E. shells. The Hun "archie" doesn't half give you a job dodging him if you go within the range. ("Archie" is war talk for anti-aircraft guns.) He keeps you busy

BC Archives, 93-6553 Box 4 DREWRY FAMILY Selected Correspondence, 1917 – 1919.