This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
Apply pearlash directly to the stain, allowing it to set a minute or two, then boil the article in soap water for several minutes. The method is harmless and inexpensive, and can be used by anyone.
 
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