The atmosphere exhilarates. On one’s energies and spirits, it acts as a stimulus, so that one does not suffer from lassitude here, as is usual at the north. The nights are refreshing in the hottest season. This remark is true, I believe, only of the atmosphere in the neighborhood of the sea, amid the coast climate. Indeed, the whole body of the atmosphere on the coast is more pure and healthful than in the interior; and is believed also to be medicinal in its effects. The various chemical ingredients of the atmosphere on the coast, are powerful disinfecting agents, which are perpetually elaborated, from the prodigious evaporation and other chemical combinations of the mineral waters of the sea, whose grand elements are _soda_ and _chlorine_. These impart to the atmosphere healing power and medicinal virtue. The sea and the sun are laboratories of healthful energy and influence, which are projected into this atmosphere from natural resources, and which are taken into the system by the ordinary process of respiration. For _these reasons_, invalids have often experienced as great, if not greater benefit, from a summer residence here, than from a winter sojourn. Disease, taken in its incipient stages, may be eradicated, under the influence of the climate alone, aided by the “_vis medicatrix naturæ_.” Air and exercise are the chief medicines required. CLASS OF DISEASES REACHED AND FAVORABLY AFFECTED BY THIS CLIMATE. In relation to this interesting point of inquiry, the opinions and reasoning of Dr. Samuel Forry (in the Journal of Medical Science, in the year 1841) are full and explicit. _Bronchitis._--“The advantage of a winter residence in a more southern latitude, as respects this disease, becomes at once apparent. “If the invalid can avoid the transition of the seasons, that meteorological condition of the atmosphere which stands first among the causes that induce catarrhal lesions, he will do much towards controlling the malady. “As regards the change of climate, it will be observed that in the advantages enumerated, reference is made only to _chronic bronchitis_. “The climate of Florida has been found beneficial in cases of incipient pulmonary consumption, and those threatened with disease from hereditary or acquired indisposition. It is in _chronic bronchial_ affections more particularly that it speedily manifests its salutary tendency. “But there are other forms of disease, in which such a climate as that of East Florida is not unfrequently of decided advantage. To this class belongs _asthma_. “In chronic disorders of the digestive organs, where no inflammation exists, or structural changes have supervened in viscera important to life, but the indication is merely to remove disease of a functional character, a winter’s residence promises great benefit; but exercise in the open air, aided by a _proper regimen_, are indispensable adjuncts.