Physicians have noted instances where a foreigner coming to this country at the age of four or five has completely forgotten his native tongue. Grown old and gray, in moments of unconsciousness through fever, the aged man has talked in the forgotten language of infancy. Our best students of mental philosophy believe that no thought or feeling, no enmity or aspiration, is ever forgotten. The sentiments written on clay harden into granite. Dormant memories are not dead. At a touch they return in their old-time power and vigor. Science tells us that the flight of a bird, the falling of a leaf, the laughter of a child, the vibration of song, changes the whole universe. The boy shying a stone from one tree to another alters the center of gravity for the earth. And if the movements of dead leaves and stones are events unchangeably written down in nature, how much more are living hopes and thoughts. The soul is more sensitive than the thermometer, more delicate than the barometer, and all its processes are registered. Thoughts are events that stain the mind through in fast colors. Did man but know it, no event falls through memory's net. It helps us to understand the immortality of memory to notice the provision made in nature for revealing hidden facts and forces. To-day chemistry shows us how events done in darkness shall be revealed in light, and the deeds of the closet be proclaimed from the housetop. In olden times princes communicated with each other by messengers. Then it was necessary to guard against the dispatch falling into the hands of the enemy, so between the lines of the apparent message was a dispatch traced in letters as colorless as water. But when the sheet was held before the blazing fire, the secret writing appeared. Thus in the kingdom of the soul, nature has provided for causing events to stand forth from the past. Under stimulus the memory performs the most astonishing feats. Excitement is a fire that causes the dim record to stand forth in clearness.