Lead pencils contain no lead. Lead pencil is as much a misnomer as it would be to call a horse a cow. Red lead is an oxide of lead, and white lead is a carbonate of lead, but the black lead used in pencils is neither a metal nor a compound of metal. It is plumbago or graphite, one of the forms of carbon.
Whalebone.
This substance is improperly named, since it has none of the properties of bone; its correct name is baleen. It is found attached to the upper jaw, and serves to strain the water which the whale takes into its mouth, and to retain the small animals upon which it subsists. For this purpose the baleen is abundant, sometimes eight hundred pieces in one whale, placed across each other at regular distances, with the fringed edge towards the mouth.
Light from Potatoes.
The emission of light from the common potato, when in a state of decomposition, is sometimes very striking. Dr. Phipson, in his work on "Phosphorescence," mentions a case in which the light thus emitted from a cellarful of these vegetables was so strong as to lead an officer on guard at Strasburg to believe that the barracks were on fire.
A Very Long Word.
The longest Nipmuck word in Eliot's Indian Bible is in St. Mark i. 40, Wutteppesittukgussunnoowehtunkquoh, and signifies "kneeling down to him."
Cobblers' Stalls in Rome.
The streets of Rome in the time of Domitian were so blocked up with cobblers' stalls that he caused them to be removed.