"_Asthma_, when purely nervous, is almost invariably relieved, and sometimes cured permanently, though more often it reappears with a return to the atmosphere in which it was generated, the rest from attacks and improvement in the general health caused by the climate will, however, even then often ward off a relapse for some time. The elevation at which the greatest relief is afforded varies with the case. When there is much bronchitis and emphysema, or heart trouble, the asthma is often worse at first, though it may afterwards be relieved; where these complications exist their extent and character must be the guide about coming. When the affection of the heart is not very great or long existing, a relief of the asthma generally brings improvement in its tone. Where these complications exist, if a trial of this climate is advised, it is best for the patient to halt two or three times for a few days, at least while ascending the slopes, and avoid all exertion for the first few weeks after arrival, and be prepared to depart if improvement does not show itself at the end of the first month. "_The throat_ when affected with chronic catarrh is usually much benefited, probably locally, as indicated by Dr. Weber, by the readier separation of the mucus. I have also had cases of tuberculous ulceration of the larynx, in which the ulcers have healed under topical and general treatment, though Dr. Weber states such cases are not suitable. "_Chronic Bronchitis_ is also improved, though the cough at first is frequently increased for a time. When, as a result or complication of the bronchitis, there is much emphysema, considerable risk is run by coming to this elevation. However, when the emphysema is moderate in extent, and exertion is avoided for the first few weeks, the readier clearing of the bronchial tubes allows the sound portions of the lungs to be more perfectly used; the strain upon the emphysematous parts being thereby relieved, the patient ultimately breathes with greater comfort, and the bronchitis is in time removed. Where old, chronic bronchitis with emphysema exists there is frequently marked dilatation of the right side of the heart, in which case a patient should by all means avoid Colorado. "_Advanced Cases._--Where the disease is much advanced it goes without saying that no honest physician would recommend a change of climate, and especially so great a change as to an elevation of several thousand feet; but cases do often come of their own will, cheered by the delusive hope that is characteristic of the disease, and though the result is usually a hastening of the end, yet death is generally less tedious and harassing, the sick one frequently being out enjoying the sunshine up to the last day, dying quietly and quickly with a failing heart, instead of being confined to bed for days or weeks in a close, heavy atmosphere, which impedes the last struggling efforts at respiration. TIME OF STAY.