Dissolve gum in 1 cup lukewarm water. Soft water should be used. Let stand 24 hours or til it gels, then add other ingredients. Shake well and dilute with warm soft water until the desired consistency is obtained.
Personal note from Sherry - Nope, I don't know what gill is...other than that it is obviously a unit of measure. I don't know what gum tragacanth is either, but I thought some of you may enjoy looking at this recipe and maybe figuring out what those things are!