IRON MINIUM. Iron minium a coloring matter founded on the iron principle is destined to supplant red lead and other pigments that have been used until now for coating wood iron anti other metals. The advantages of iron minium are; its solidity durability cheapness and above all its property of preserving the iron completely from oxydation and of hardening the wood. These qualities now acknowledged by first-rate man ufacturers have assured the fullest success to the iron minium which is advantageously employed all over Europe in the largest manufactories and sugar works as well as by the
IRON MINIUM. Iron minium a coloring matter founded on the iron principle is destined to supplant red lead and other pigments that have been used until now for coating wood iron anti other metals. The advantages of iron minium are; its solidity durability cheapness and above all its property of preserving the iron completely from oxydation and of hardening the wood. These qualities now acknowledged by first-rate man ufacturers have assured the fullest success to the iron minium which is advantageously employed all over Europe in the largest manufactories and sugar works as well as by the railway and steam naviga tion companies. The great solidity of this new paint is principally due to its extreme purity. It contains no acid no adulteration and is therefore superior to lead minium which contains always some sulphuric acid a small quantity it is true but quite enough to attack the iron and to eat into it after a very short space of time. Iron minium forms a very smooth and stripeless coat upon the iron varnishing as it were the metal and preventing the atmospheric influences from hav ing any action upon the paint. It results from statements made by eminent En glish and French chemists and engineers that the use of red-lead and generally of all preparations in which lead is employed is injurious to the iron coated with it. They examined vessels in which the iron after one single voyage to the East Indies was visi bly corroded and blisters discovered on the coating itself containing a clear liquid and exposing thus the iron which presented a certain number of metal lic crystals. Each blister was found to be a sort of galvanic battery and corrosion in such a case is un avoidable because there is always a chemical action going on whenever electricity is produced. This phenomenon must needs continue as long as there remains any red-lead in consequence of the immedi ate contact of the lead paint with the metallic sur face. Red-lead therefore as well as any other lead pigmen
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