We have found mechanical movements especially effectual in paralysis, neuralgia, sleeplessness, and other nervous affections; in derangements of the liver, constipation, and dyspepsia; in displacements of the uterus, and congestion, and inflammation of the pelvic organs. For a complete description of the mechanical movements and the machinery employed in the treatment of diseases at the Invalids' Hotel and Surgical Institute, the reader is referred to the appendix to this work. * * * * * CHAPTER IV. HYGIENIC TREATMENT OF THE SICK. There are two essentials requisite to the successful treatment of the sick: (1.) Medical skill; (2.) Good nursing. The former is necessary in order that the condition of the patient be fully understood, and the proper means be employed to effect his recovery. The latter is essential, in order that all influences favoring the production and development of disease may be removed, the tendencies to restoration be promoted by every possible means, and the directions of the physician be properly observed. Success in the treatment of the sick requires good nursing. Without it, the most skillful physicians fail to effect a cure; with it, the most unqualified may succeed. If certain hygienic agencies are essential to the maintenance of health, how much more necessary it is that they be employed in sickness! If certain conditions cause disease, how great the necessity is that such conditions be obviated and hygienic ones substituted! Notwithstanding the importance of good nursing, in the rural districts it is frequently difficult to find a professional nurse, or, if one can be obtained, it is often impossible for the invalid to procure such services, on account of the expense which must necessarily be incurred. Hence, this office usually devolves upon some relative who is considered to be the best qualified for the position; or, as is often the case, necessity demands that the patient be left to a change of nurses. A woman is generally selected for this important position. Her soft hand and soothing voice, her kindly, sympathetic, and provident nature, together with her scrupulous cleanliness, render her man's equal, if not his superior, in the capacity of nurse. There are circumstances, however, in which the services of a man are indispensable; hence the necessity that all should be qualified to care for the sick.