=The First Menstruation.=--The appearance of the first menstruation is a most critical time in the life of every young girl, and the mother should be prepared to give her daughter the best of advice. Some slight inattention, some undue exposure, some thoughtlessness due entirely to ignorance on these great subjects, may change the whole future from a life of comfort and good health to prolonged days of misery and intense suffering. =Menstruation and Childbearing.=--It is the belief at the present time, among all who have studied this subject, that menstruation is closely connected with the function of childbearing. The changes which take place each month within the uterine cavity are of precisely the proper character to prepare this tissue for the reception of the fertilized egg. =Rules to be Observed.=--A few rules should be carefully followed during each menstruation, in order that future trouble may be prevented. First of all, it is necessary to avoid taking cold; yet a person should not stay in the house by the side of a fire, or in a warm room all the time, for this would increase the susceptibility to cold. Care should be taken to avoid undue exposure, for nothing will disturb the menstrual process quicker than the sudden chilling of the body, especially when moist with perspiration. Intense mental excitement should be avoided, also. If the young girl is at school, she should be told to study more lightly at this time; while any great excitement of any kind, as giving way to anger, or extreme merriment, should be avoided. The feeling of debility and depression which usually accompanies this time is a gentle warning by nature that the body should remain quiet and at rest. It is natural for many persons to be especially depressed at this time; an effort should be made by those who understand the situation to make everything as agreeable and pleasant as possible to the sufferer. =Danger to School Girls.=--Without the slightest doubt, many women are suffering intensely to-day who might be enjoying the best of health had they not been obliged to study so intensely while in school. A moderate amount of study does no harm at this time, but the dread of examinations, with our modern system of cramming at certain times of the school year, has, without doubt, so worked upon the nervous system that many a life has been made miserable as a result. =Danger to Office Girls.=--It is astonishing, when one fully understands the processes of menstruation, how so many girls and young women can remain all day behind the counter in the store, or at the work-table, during these few trying days, and even escape without serious illness. Employers never think of the subject, and there is a natural delicacy on the part of those most concerned to mention the subject.