The emergence of scurvy
Scurvy did not emerge as a problem for maritime explorers until vessels started penetrating the Indian and the Pacific Oceans. Vasco da Gama lost two thirds of his crew to the disease while making his way to India in 1499. In 1520 Magellan lost more than 80 per cent while crossing the Pacific. Two voyages made by Pedro de Quiros early in the 17th century resulted in huge mortality from a sickness Sir Richard Hawkins called, after his venture into the South Seas, 'the plague of the Sea, and the Spoyle of Mariners'.
'... Magellan lost more than 80 per cent of his crew while crossing the Pacific.'
Scurvy came to public notice in Britain after Commodore George Anson led a squadron into the Pacific in the 1740s to raid Spanish shipping. He lost all but one of his six ships, and two thirds of the crews he shipped (700 survived out of an original complement of 2000), most of them to scurvy. Their symptoms were vividly described by Richard Walter, the chaplain who wrote up the official account of the voyage. Here were descriptions of its ghastly traces: skin black as ink, ulcers, difficult respiration, rictus of the limbs, teeth falling out and, perhaps most revolting of all, a strange plethora of gum tissue sprouting out of the mouth, which immediately rotted and lent the victim's breath an abominable odour.
There were strange sensory and psychological effects too. Scurvy seems to have disarmed the sensory inhibitors that keep taste, smell and hearing under control and stop us from feeling too much. When sufferers got hold of the fruit they had been craving they swallowed it (said Walter) 'with emotions of the most voluptuous luxury'. The sound of a gunshot was enough to kill a man in the last stages of scurvy, while the smell of blossoms from the shore could cause him to cry out in agony. This susceptibility of the senses was accompanied by a disposition to cry at the slightest disappointment, and to yearn hopelessly and passionately for home.
Now we know that scurvy was a cocktail of vitamin deficiencies, mainly of C and B, sometimes compounded by an overdose of A from eating seals' livers. Altogether these produced a breakdown in the cellular structure of the body, evident in the putrescence of the flesh and bones of sufferers, together with night blindness and personality disorders associated with pellagra. In the 18th century no one knew what caused scurvy, whose symptoms were so various it was sometimes mistaken for asthma, leprosy, syphilis, dysentery and madness.
Published: 2002-08-01
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