Nausea, or sickness, with or without vomiting, is one of the most frequent and troublesome accompaniments of pregnancy. It is so general, in fact, as to be looked upon as one of the earliest and most reliable signs of that state. It is undoubtedly caused, in the earlier stages, simply by the intimate sympathy which exists between the stomach and womb, and which causes one of those organs to be temporarily deranged whenever the other is in any unusual condition. In the latter months it is also produced by the enlarged womb pressing on the lower part of the stomach, as it rises in the abdomen. In many diseases of the womb, particularly in enlargements, and tumors, the stomach will become deranged in precisely the same manner as during pregnancy, and the patient is frequently deceived thereby as to her real condition. In most cases the sickness does not begin till about the second month, and it seldom lasts beyond the third or fourth. There are some however, with whom it commences almost immediately after fecundation, and others with whom it lasts till the very commencement of labor. I have even known persons who always experienced the nausea _at the very moment of conception_, and who were thus aware when that event took place. With some persons the trouble occurs only during certain parts of the day, most usually in the morning, while with others it comes on irregularly, or even endures constantly. In most cases it is not very severe, and causes but little distress; occasionally however, it is very serious, and may even lead to fatal results, in spite of all that can be done. Abortion is frequently brought on by it; and so are faintings, and spitting of blood. Many women however, will vomit with violence, during almost the whole period, without either accident or evil effect. The treatment must vary according to the cause of the derangement, its violence, and the effect it produces. In regard to diet but little can be said that will be found generally applicable. Mild and light food is generally recommended, but is not always the best, for some females can only keep on their stomachs the most indigestible articles. Perhaps nothing more can be said, with propriety, than that the patient should take _whatever she can retain_, particularly if she has become weak from want of nourishment, which is often the case. Some females can only keep down a little broth, or tea, or sweetened water, while others find solid food the best, or fruits. I have known many able to take _Gum Arabic_, either solid or dissolved in water, and retain it, when nothing else could be borne. This is nourishing, and may often keep up the strength till the sickness abates.