Dry ice, sometimes referred to as  cardice  (chiefly British chemists), is the solid form of carbon dioxide. It is used primarily as a cooling agent.Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere).It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.t is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere). It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.
Maryland is also called the Old Line State and Free State.The Old Line nickname was given during the Revolutionary War, when 400 soldiers in the First Maryland Regiment fought a British force of 10,000 and helped General George Washington's army to escape.
Virginia. Cecil Calvert, 2nd Lord of Baltimore, founded Maryland in 1632. Cecilâs father, George Calvert had received a royal charter for the land from King Charles I. The new colony was named after Henrietta Maria, the wife the king. In November of 1633, about 200 Catholic settlers led by Cecilâs younger brother boarded the ships ARK and DOVE, and set sail for Marieâs Land (later Maryland).