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Cellophane is produced by dissolving wood pulp or other cellulose material in an alkali with carbon disulfide, neutralizing the alkaline solvent with an acid, extruding the precipitate into a sheet, impregnating it with glycerine, and then drying and cutting the sheets to the desired size.

Cellophane was invented about 1910 by the Swiss chemist Jacques Brandenberger (1873?–1954), who in 1912 invented the first machines for large-scale production and established a factory near Paris.

"Checkered Game of Life," in 1860. It sold 45,000 copies in the first year. The Milton Bradley Co. continued to dominate the production of games through the 1900s, with more recent, familiar games such as "The Game of Life," "Candyland," "Battleship" and "Operation."

Our last word in business is about a little product that requires concise writing. Thirty years ago this month, it hit stores across the country. Scientists at the office products conglomerate 3M had stumbled upon a new kind of adhesive, one that could stick to many surfaces and be pulled off easily and repositioned.

Since 1980, they have been a top-selling office supply. They're no longer just three-by-three inches and light yellow in color. The little sticky pads come in eight sizes, and dozens of shapes and colors.

heir contribution to human progress has been so great that Post-It note inventers Arthur Fry and Spencer Silver were inducted last month into the National Inventors Hall of Fame.