Note:  Do not rely on this information. It is very old.


D, the fourth letter of the alphabet, derived from the Chalkidic form of the Greek delta adopted by the Romans from the Sicilian Greeks. It is probably derived from a hieroglyphic representing the triangular doorway of a tent. The Roman D is the numeral sign for 500. In music D is the second note of the natural scale.

“It is most profitable, it is blessed, to be always looking beyond second causes in all our trials and distresses, and to discern the Lord's hand, in infinite love and wisdom, appointing all. For this brings the soul into a state of resignation and tranquility at least, if not of holy Joy.”
–Robert Hawker, Poor Man’s Commentary, Psalm 17