Throughout Jane Austen's life, she was to hold an affection for the British Royal Navy. This was due to the enlistment of two of her brothers, Francis and Charles. Readers of her novels will find a number of positive naval characters, none more so that Captain Wentworth of Persuasion. Officers like these would have been well aware of the dangers of scurvy and alert to its presence aboard ship. Scurvy is a disease resulting from a deficiency of vitamin C. Scurvy often presents initially with fatigue, followed by formation of spots on the skin, spongy gums, and bleeding from the mucous membranes. Spots are most abundant on the thighs and legs, and a person may look pale, feel depressed, and be partially immobilized. As scurvy advances, there can be open, suppurating wounds, loss of teeth, yellow skin, fever, neuropathy and finally death from bleeding. Scurvy was at one time common among sailors, pirates and others aboard ships at sea longer than perishable fruits and vegetables could be stored (subsisting instead only on cured and salted meats and dried grains) and by soldiers similarly deprived of these foods for extended periods. It was described by Hippocrates (c. 460 BC–c. 380 BC), and herbal cures for scurvy have been known in many native cultures since prehistory. Scurvy was one of the limiting factors of marine travel, often killing large numbers of the passengers and crew on long-distance voyages. This became a significant issue in Europe from the beginning of the modern era in the Age of Discovery in the 15th century, continuing to play a significant role through World War I in the early 20th century. Between 1500 and 1800, it has been estimated that scurvy killed at least two million sailors:
- Jonathan Lamb wrote: "In 1499, Vasco da Gama lost 116 of his crew of 170; In 1520, Magellan lost 208 out of 230;...all mainly to scurvy."
- In 1593, Admiral Sir Richard Hawkins advocated drinking orange and lemon juice as a means of preventing scurvy.
- In 1614 John Woodall, Surgeon General of the East India Company, published "The Surgion's Mate" as a handbook for apprentice surgeons aboard the company's ships. In it he described scurvy as resulting from a dietary deficiency. His recommendation for its cure was fresh food or, if not available, oranges, lemons, limes and tamarinds.
- A 1707 handwritten book is by Mrs. Ebot Mitchell discovered in a house in Hasfield, Gloucestershire, contains a "Recp.t for the Scurvy" that consisted of extracts from various plants mixed with a plentiful supply of orange juice, white wine or beer.
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