"I know the properties of this drug," he replied. "I know precisely how it affects the human animal and I know its dangers. The risk does not reside in the drug itself. My only fear is that I may become lost in time. You see, I shall assist the drug. Before I swallow this pellet I shall give my undivided attention to the geometric and algebraic symbols that I have traced on this paper." He raised the mathematical chart that rested on his knee. "I shall prepare my mind for an excursion into time. I shall approach the fourth dimension with my conscious mind before I take the drug which will enable me to exercise occult powers of perception. Before I enter the dream world of the Eastern mystics I shall acquire all of the mathematical help that modern science can offer. This mathematical knowledge, this conscious approach to an actual apprehension of the fourth dimension of time will supplement the work of the drug. The drug will open up stupendous new vistas—the mathematical preparation will enable me to grasp them intellectually. I have often grasped the fourth dimension in dreams, emotionally, intuitively, but I have never been able to recall, in waking life, the occult splendors that were momentarily revealed to me.