To Prevent Horses Being Teased by Flies
Take one-half pound of walnut or butternut leaves, and pour upon them three quarts of cold water; let it infuse one night, and pour the whole next morning into a kettle, and let it boil for a quarter of an hour. When cold it is fit for use.
No more is required than to moisten a sponge, and before the horse goes out of the stable, let those parts most likely to be irritated be well smeared over with the liquor, between and upon the ears, neck, flank, etc.