"'It was our chief killer. The young officers looked to it for promotion. They called it the black vomit, or sometimes yellow jack.'
'Would you say that there was a facies febris markedly typical of the disease?'
'Yes indeed, sir: more so than in almost any other.'"
--P. O'Brian, The Commodore, 225
According to A Sea of Words, "Literally, the face of fever, traditionally known as the "Hippocratic facies" seen in patients with advanced fevers and characterized by sunken eyes, hollow cheeks and temples, leaden complexion, and pinched expression of the entire face." (p. 192)