A proper sanitary environment should at all times be maintained that there may not be an unnecessary drain on the adaptative forces of the body. Cause of Dis-ease Chiropractic does not accept the theory that dis-ease is caused by extrinsic conditions. There may be a great variation in the environment and yet Innate Intelligence be able to maintain health. If there is sufficient interference with the transmission of mental impulses through the nerves, there will be dis-ease in the body regardless of the perfect environment that may be artificially produced. If the transmission is normal the individual may take the so-called dis-ease germs into his body and feel no ill effects for they will be excreted as so much waste material which can not be used in the metabolism of the body. But if there are subluxations which interfere with the transmission of mental impulses and reduce the process of excretion the tissues will become abnormal and proper culture media will be formed in which there will be developed the germs which act as scavengers for the purpose of destroying the waste matter which accumulates. The cause of dis-ease is within the body itself. The cause of dis-ease is interference with transmission of mental impulses from the brain to the periphery, thus preventing the organ from performing its full and normal function. This results in a lack of coördinate action between the organs of the body and interferes with the intellectual adaptation to external conditions. The question may be raised at this time relative to the effects produced by the introduction of poison into the body and relative to germs being classed as poisons producing certain effects in the body. We will not endeavor at this time to fully deal with these questions, for in order that the student understand thoroughly the chiropractic idea of these things, it will be necessary to study many points, both in connection with the hygiene and also with the philosophy of Chiropractic. This point is thoroughly covered in the philosophy under the head of the Poison Cycle. We will simply state briefly here that a poison is anything which can not be used in the metabolism of the body and which, if allowed to remain in the body, will be carried to the tissue cells and do harm. In this event Innate will at once begin a process of elimination. If the channels of excretion are not normal and the organs are unable to do their work properly because of the interference with the transmission of mental impulses, it can readily be seen that the poison will be retained in the body and do harm. The character of the injury will be governed by the character of the poison retained.