A Practical Manual On Sea Water Distillation
With A Description Of The Necessary Machinery For The Process

152 SEA WATER DISTILLATION. be taken to prevent any grease or lubrication from the pump contaminating the water. This might happen if the distilled water is pumped into the filter, and the filtered water allowed to gravitate away. It should also be noted that red lead must be avoided in making joints that are in connection with the distilled water, as the water would be fouled by the oily matter, which is not removable by the filter. Note.—Before leaving this subject, a few words may not be out of place with reference to the process of purifying water by ozone. Ozone is an allotropic and denser form of the gas oxygen—i.e., it is oxygen in a somewhat different atomic state. Thus, nascent oxygen is in the form of one atom or molecule, the oxygen in the air is in a double atomic form, and ozone, of which there is a small quantity also in the atmosphere, is in a triple atomic form. Ozone has a strong tendency to oxidise, and therefore consume organic matter, so as to make it a powerful oxidiser. By this process, which is given more in detail in the Times Supplement of 4th August,