First subscription library, Philadelphia, 1731.
Dark Ages, from the 6th to the 14th century.
The Latin tongue became obsolete about 580.
The great London fire occurred Sept. 26, 1666.
The value of a ton of pure gold is $602,799.21.
Ether was first used for surgical purposes in 1844.
Ignatius Loyola founded the order of Jesuits, 1541.
First authentic use of organs, 755; in England, 951.
The first newspaper advertisement appeared in 1652.
Cork is the bark taken from a species of the oak tree.