Milk Sickness
A more mysterious disease is “milk-sick,” which prevails in certain restricted districts, chiefly where the cattle graze in rich and deeply shaded coves. If not properly treated it is fatal both to the cow and to any human being who drinks her fresh milk or eats her butter. It is not transmitted by sour milk or by buttermilk. There is a characteristic fetor of the breath. It is said that milk from an infected cow will not foam and that silver is turned black by it. Mountaineers are divided in opinion as to whether this disease is of vegetable or of mineral origin; some think it is an efflorescence from gas that settles on plants. This much is certain: that it disappears from “milk-sick coves” when they are cleared of timber and the sunlight let in. The prevalent treatment is an emetic, followed by large doses of apple brandy and honey; then oil to open the bowels. Perhaps the extraordinary distaste for fresh milk and butter, or the universal suspicion of these foods that mountaineers evince in so many localities, may have sprung up from experience with “milk-sick” cows. I have not found this malady mentioned in any treatise on medicine; yet it has been known from our earliest frontier times. Abraham Lincoln’s mother died of it.
(In 1928, milk sickness was found to be caused by the ingestion of tremetol from the white snakeroot plant.)