Firemen use chemical foam on fires and get covered in it in the process!
Full titles read: "Fire Foam - Chemical foam, looking very much like snow, is now taking the place of water and chemicals in fire fighting, in Paris."
Various shots of firemen training hoses that are spewing out chemical foam on fires on buildings and burning cars. M/S of two fire-fighters that seem to be struggling with the end of a hose (a blockage?); one has the hose between his legs when a huge blast of foam comes through, covering both men - it looks quite comical! The hose 'escapes' from them and snakes around on the ground.