Making an Artificial Star.
It sometimes happens or is claimed to have happened that a pure-bred foal, registered when young in the stud book, is set down as having a star in its forehead but which on attaining maturity shows no such mark. Sometimes in matching horses a difficulty is experienced when a perfect mate is found with the exception that a star is lacking.
In such cases the horseman is occasionally more or less successful in producing an artificial star. One plan suggested is to cut a boiling hot potato in two and instantly apply the cut surface to the skin of the forehead. The scalding removes the hair and it comes in white, but a careful examination of such an artificial scar often will disclose a small pink, hairless spot in the center of the mark. The same tell-tale spot is seen where the artificial star has been produced by cauterizing with a red-hot iron or scalding with boiling water. The discovery of an artificial star on the forehead of a stallion or mare sold as pure-bred and registered is sufficient reason for making a careful investigation as to the identity of the animal and the integrity of the seller.
An old book gives the following plan of making an artificial star: Take a piece of coarse tow-linen, the size of the wished-for star. Spread on it warm pitch, and apply it to the shaved spot; leave it on for two or three days, then wash with a smart water, or elixir of vitriol, two or three times a day until well. When the hair grows it will be white.