Vitamin C not consumed. The time frame for onset of symptoms of scurvy in unstressed adults on a completely vitamin C free diet, however, may range from one month to more than six months, depending on previous loading of vitamin C. Notable human dietary studies of experimentally induced scurvy have been conducted on conscientious objectors during World War II in Britain and on Iowa state prisoners in the late 1960s to the 1980s. These studies both found that all obvious symptoms of scurvy previously induced by an experimental scorbutic diet with extremely low vitamin C content could be completely reversed by additional
History of the Royal Navy and England's Royal Navy were organised as one force, though not technically merged, as a consequence of the Union of the Crowns when James VI of Scotland became King of England also, as James I. Though the Lord of the Isles had a large fleet of galleys in the 13th and 14th centuries, there appears little or no trace of a Scots navy during the Wars of Scottish Independence. With Scottish independence established, Robert the Bruce turned his attention to the upbuilding of Scots shipping and of a Scots navy. In his later days he visited the Western Isles, which