One of the early forms of camoflauge was the color called "rifle green". Many 18th century British rifle regiments had uniforms of this color, which is a dull dark green, because it hid them in the trees that they were firing from.

The earliest pottery glazes were ash glazes, made from the ashes of plants.

I have also learned that it's not a big week for blogging at GiraffeBoards.

Modern chess evolved from Indian games, and the key rule changes mostly came out of Spain and Italy durig the 15th century (moving pawns two squares on the first move, the movement patterns of the bishop and queen). The first chess tournament was in London in 1851.

Some vitamins, such as A and C, are apt to change in high heat conditions. When fortifying breakfast cereals with these vitamins, they spray them on the cereals after the baking.

Histamines, in addition to being important components of the immune system, are involved with sleep regulation. Also, many schizophrenics have low histamine levels.