petersburg in the courtyard of the vasilievsk fire station. the burning of a wooden booth engulfed in flames was extinguished with a fire extinguisher in 14 seconds. at the international construction and art exhibition held in st. petersburg in 1908, a fire extinguisher. was highly praised, the firefighting magazine wrote about this: by its external appearance it can be distinguished from others, it has a cylindrical shape, is made made of sheet iron, there are three compartments inside , two of them are filled with various chemical liquids, and the third is empty, to activate it you need to turn it upside down, then both liquids, pouring into the third empty compartment, are mixed in it. and instantly forms foam in a much larger volume than the combined liquids. the author of the correspondence especially emphasized that the success of extinguishing is at least 10 times superior to methods of extinguishing with water. taught by experience in communicating with officials, lorana organizes her own workshop in petersburg, but the demand for fire