THE LAST WHITE HOUSE COW

Pauline, the last cow to live on White House grounds, moved to the neighborhood of 19th and B streets in 1911. But she retained special privileges at the President’s home, visiting there each morning to graze the White House lawn. She was returned home each day at twilight.

During the reign of England’s King Charles II, the cost of a merchant vessel was about £8 per ton. A warship cost about £15 per ton. Construction of the king’s yachts, however, required silk ceremonial flags, crimson damask, rich mahogany and other luxuries, which brought construction costs up to about £33 per ton.

The hole at the end of a hypodermic needle is called the lumen.

About 20 percent of a robin’s diet is made up of earthworms, and the red-breasted birds are quite adept at getting a meal. Ornithologists have observed robins that successfully captured earthworms at the rate of 20 per hour.

The state tree of Nebraska is the Cottonwood.

At least 17 different professional football teams have represented New York City. The first was Brickley’s New York Giants, founded in 1921.

Richard M. Nixon was only the country’s ninth President to ride to his inauguration in an automobile.