connected with the excited portion of the brain become involved, and their functions may be entirely deranged. The automatic power of the human body may also assume undue control in those who yield to fancies and caprice, and lead an unnatural and sedentary life. There is an antagonism between this automatic force and the life of relation or brain-life of the individual. The more the balance of powers is lost in the human brain--reason being no longer the controlling force--the greater becomes the power of this instinctive life of the body, the greater its capability of answering every fanciful suggestion, and even of exciting those suggestions. The individual may thus become the sport of his own unbalanced faculties, and a prey to every species of morbid hallucination. An organization so complicated (as this human body), designed for such manifold uses, and at the same time drawing the elements of its existence from the external world, must be powerfully influenced by all the circumstances which surround it. Certain physical and mental conditions are essential to human growth, to health. Hence the question of food and clothing, of drainage and ventilation, of human habitations, of exercise and occupations, attain equal importance and dignity, as essential to the fulfilment of the great changeless plan of life. Thus we are brought face to face with a great fixed fact, a fact which concerns every human being during every moment of life--viz., God’s unchanging law of human growth. This law we are called on to study, to obey, and obedience to it is placed first in the order of human duties. Obedience can only be rendered by study of the objects of physical life, of its structure, its conditions, its rules. Its learning, thus regarded, becomes sacred learning, and ignorance is criminal.