For piles, chop a horseradish coarsely and soak it in a strong solution of saltpetre overnight, next morning drain it and allow to dry completely in an airing cupboard or over a low heat. Meanwhile obtain a steel bucket and cut a hole in the bottom, taking care to remove all sharp edges. When the horseradish is dry place it in a heap on a concrete or stone surface and light it, making sure it only smoulders, it is important that there is no visible flame, when it is smoking strongly, place the previously prepared bucket over it (inverted) and having arranged one's clothing to expose the affected part, sit on the bucket so as to allow the smoke access to the haemorrhoids. Repeat twice daily for a week.