An enormous growth of the paint industry began in the 1860s,
stimulated by the invention of a suitable marketing container
— the paint can.
The first factory-made paints in cans consisted of more finely
ground pigments in an oil base; after purchase, additional
oil was added to the contents of the can to make up the paint.
Such paints saved the time of hand grinding pigments, and
were discussed at length by John Masury in his numerous books.
After 1875, factory-made paints were available at a reasonable
cost and, as a result, greater numbers of people painted and
decorated more of their buildings, and more frequently. The
new commercial market created by ready-mixed paint became
the cornerstone of our modern paint industry.