Excerpt from Crystal Gazing and Clairvoyance by John Melville circa 1896 White Clouds...indicate Good; the affirmative; favour. Black Clouds..." Bad; inauspicious. Violet, Green, Blue..." Coming joy; excellent. Red, Crimson, Orange, Yellow..." Danger, trouble, sickness; "beware;" deception, grief, betrayal, slander, loss; surprises of a disagreeable nature. Ascending Clouds..." Affirmativr replies to questions asked. Yes! If the query is a silent one is makes no difference. Descending Clouds..."The negation of all questions. No! Whatever appears on the left-hand side of the gazer is real, or a picture of an actual thing. Whatever appears on the right-hand side is symbolical. Moonlight...Benefits the mirror or crystal. Sunlight...The chemical and active rays of influence of the direct sunlight are injurious, and will ruin the magnetic susceptibility of the crystal. Extremes of Heat or Cold...Are likewise injurious. Clouds or Shadows...Moving toward the gazer's right hand, indicate the presence of spiritual beings, and their interest. Clouds or Shadows...Moving towards the left hand mean "The seance is ended for the present time."