We have taken the liberty of bestowing a new title upon this phase of mentation--we have thought it well to call it "Sub-consciousing." The word "Sub," of course means "under; below;" and the word "Consciousing" is a favorite term employed by Prof. Elmer Gates, and means receiving impressions from the mind. In a general way, "Sub-consciousing," as used in this lesson, may be understood to mean "using the subconscious mind, under orders of the conscious mind." By referring to our Eighth Lesson, we see mention made of the case of the man who indulged in "unconscious rumination," which happened to him when he read books presenting new points of view essentially opposed to his previous opinion. You will note that after days, weeks, or months, he found that to his great astonishment the old opinions were entirely rearranged, and new ones lodged there. On the same page you will see mentioned the case of Sir William Hamilton, who discovered an important law of mathematics while walking with his wife. In this case he had been previously thinking of the missing link in his chain of reasoning, and the problem was worked out for him by the sub-conscious plane of his Intellect. On the same page, and the one following, is found the case of Dr. Thompson, who gives an interesting account of the workings of this part of his mind, which caused him at times to experience a feeling of the uselessness of all voluntary effort, coupled with a feeling that the matter was working itself clear in his mind. He tells us that at times he seemed to be merely a passive instrument in the hands of some person other than himself, who compelled him to wait until the work was performed for him by some hidden region of the mind. When the subconscious part of the mind had completed its work, it would flash the message to his conscious mind, and he would begin to write. On page 178 mention is also made of the great French chemist Berthelot, who relates that some of his best conceptions have flashed upon him as from the clear sky. In fact, the Eighth Lesson is largely made up of examples of this kind, and we ask the student to re-read the same, in order to refresh his mind with the truth of the workings of the sub-conscious mentality.