Andrew Lang,
1911 Encyclopædia Britannica
(1911)
“ Ordinary scryers of fancy pictures are common enough, but scryers capable of apparently supra-normal successes are apparently rare. Perhaps something depends on the inquirer as well as the scryer. The method of scrying, as generally practised, is simple. It is usual to place a glass ball on a dark ground, to sit with the back to the light, to focus the gaze on the ball (disregarding reflections, if these cannot be excluded) , and to await results. Perhaps from five to ten minutes is a long enough time for the experiment. ”
