1. Dr. Cluny Macpherson
Invented the first gas mask used by the British military (including Canadian Troops).
From St. John's Newfoundland ( ). Part of Newfoundland regiment in 1914 in WWI.

2. WWI Gas Attacks

3. Gas Cont'd Casualties from gas:
British 8,900 fatalities / 188,000 nonfatal.
Germany 9,000 fatalities / 200,000 nonfatal.

4. Types of Gas:
Chlorine Gas - a powerful irritant that can inflict damage to the eyes, nose, throat and lungs. Greenish color, can linger in soil for days. (First used by Germans at Ypres, 1915)‏
Phosgene Gas – more powerful than chlorine, took 24 hrs to kill, colourless, smelt like “moldy hay”.
Mustard Gas – odorless, colorless - Mustard gas caused internal and external bleeding and attacked the bronchial tubes, stripping off the mucous membrane. Death in 4 weeks.