The Turks use the Mohammedan Calendar, from the Hegira, July 16, A.D. 622, and it is lunar like the Jewish.

The following historical dates agree with our calendar:—

The battle of Hastings was fought on Saturday, Oct. 14th, 1066.

The Magna Charta was signed on Sunday, May 24, 1215.

Edward II. was crowned on Sunday, 25th February, 1308 (1307 in the old style).

The battle of Crecy took place on Saturday, August 26th, 1346.

The battle of Towton, Yorkshire, occurred on Palm Sunday, March 29, 1461.

THE KEY NUMBERS.

The keys for the centuries and months can be arranged at pleasure, therefore the key 0 is chosen for the present century to calculate readily the dates of our time. To make the reckoning easy in the next century it will be well to have the key 0 for 1900, then the keys for the months must all be reduced by 2, and the tables will be:—