A due appreciation of the influence of uterine disorders and diseases upon other and remote parts of the body is necessary to a correct estimate of their importance, and often of great practical value in treatment. Through the sympathetic nervous system pathological conditions of the uterus modify the processes of organic life, and by direct or reflex action {183} affect the cerebro-spinal system in its centre or at any point of its terminal ramifications. That the stomach responds readily to uterine excitations is shown in pregnancy, and uterine disease often causes disorders of the digestive organs the origin of which may not be suspected. Eructations, vomiting, and the various forms of indigestion are not uncommon. The bowels are irregular in action, constipation alternating with diarrhoea, and flatulent distension may occur even to a degree demanding special treatment. Failure of general nutrition and impoverished blood are the consequences of this disturbed digestion; without good blood there is no sound innervation, and the nervous system is soon in such a condition as to respond unduly to even insignificant impressions. Normal menstruation is marked by a nervous erethism which shows itself by irritability, fits of despondency, and exhibitions of temper. There are therefore abundant reasons why nervous diseases should be very frequently seen as a remote effect of uterine disorders. A very large proportion of these reflex diseases first occur at the period of puberty, many present striking exacerbations at every menstrual period, and some are so closely associated with this function as to be cured only by remedies addressed to it. Headache, neuralgia, hysteria in its varied forms, chorea, catalepsy, epilepsy, and even mania, have been repeatedly shown to have their origin in the sexual organs. The reproach often directed at gynecologists, of a disposition to magnify their specialty, falls pointless before such important facts; and since it is not uncommon for diseases of organs in close proximity to the uterus, as those of the urethra, bladder, and rectum, to be mistaken for or confounded with diseases of the uterus itself, there is abundant warrant for urging the closest scrutiny as to a possible uterine origin of remote diseases, especially those of a nervous character. Amenorrhoea. The term amenorrhoea signifies the absence of menstruation. It occurs in two different forms: First, those cases in which menstruation has never occurred--emansio mensium; second, those in which it has disappeared after having been established--suppressio mensium. The following pathological schedule may assist in the study of the subject. It need scarcely be said that it is not presented as correct in every particular, nor with the idea that the dividing-lines between physiological and pathological conditions can be always determined, but as a convenient guide to follow in the study of the subject: