It is not denied that mental conditions often become manifest in their effects upon the body. But, first, what produces these mental conditions? The Eddyites do not seem to care to penetrate into that question at all. Is it not true that in the majority of cases it is some physical or material cause which has either depressed or exalted the mind--brought tears to the eyes or dried them? The sight of a sudden and terrible accident to a child while crossing the street will, for the moment, rob onlookers of their power of speech, blanch their cheeks and daze them beyond the ability to move or to think. In the same way, the news that a dear son has been gassed or killed in battle will change a happy home into a house of mourning, depriving its inmates of sleep and appetite. On the other hand, the unexpected discovery of a vein of gold on one's farm will exhilarate the mind and banish a hundred fears. These mental moods have physical causes. Just as heat passes into motion and motion again into heat, material events produce mental moods; and these mental moods resolve themselves once more into physical manifestations, such as laughter or tears. The Christian Scientist observes accurately enough that depression and discouragement cause sickness, but he is too impatient to learn that these mental states are often the result of bad circulation or mal-assimilation of food. Lack of fresh air, defective vision, or a dull but constant physical pain very often lowers the mental tone, proving thereby the interdependence of mind and matter. The lecturer from whose pamphlet I have quoted realizes "that salt water will flow from the eyes if he is subjected to great grief," and "that the state of mind may disturb the secretions, causing the tears to flow," and concludes therefrom that "dyspepsia and all other bodily diseases and derangements" should be treated "with truth rather than with tabloids and powders." But what if the secretions are disturbed by purely physical causes? A child cries for something to eat, and not from unbelief or fear, which are supposed to be purely mental states; and a piece of cake will relieve his hunger and dry his tears. A splinter in the eye will provoke tears, as will also a sharp, cold wind; the removal of the one, and protection from the other, will immediately dry the eyes. Peeling onions starts the secretions. Do onions come under the class of mental causes?