John Hill, Hypochondriasis: A Practical Treatise…
“ The lips turn pale, the eyes loose their brightness and by degrees the white grows as it were greenish, the gums want their due firmness, with their proper colour; and an unpleasing foulness grows upon the teeth: the inside of the mouth is pale and furred, and the throat dry and husky: the colour of the skin is pale (though there are periods when the face is florid) and as the obstruction gathers ground, and more affects the liver, the whole body becomes yellow, tawny, greenish, and at length of that deep and dusky hue, to which men of swift imagination have given the name of blackness. ”
