Probably no place on the earth has a finer or more desirable climate than has the main portion of Cuba;[14] with the clear atmosphere of the low latitudes, no mist, the sun seldom obscured, and the appearance of the stars and sky at night far brighter and more beautiful than at the north.[15] The atmosphere does not seem to lose its transparency with the departure of day. Sunset is ever remarkable for its soft, mellow beauty here, and the long twilight that follows it. For many years the island has been the resort of the northern invalid in search of health, especially of those laboring under pulmonary affections; the soft, soothing power of the climate having a singularly healing influence, as exercised in the balmy trade-winds.[16] The climate so uniformly soft and mild, the vegetation so thriving and beautiful, the fruits so delicious and abundant, seem to give it a character almost akin to that we have seen described in tales of fairy land. The declining health of a beloved companion was the motive which induced the author of these pages to visit the delightful climate of Cuba, with the hope that its genial and kindly influence might revive her physical powers; nor were these hopes disappointed; for, transplanted from the rough climate of our own New England, immediate and permanent improvement was visible. To persons in the early stages of pulmonary complaints the West Indies hold forth great promise of relief; and, at the period when invalid New Englanders most require to avoid their own homes, namely, during the prevailing east winds of April, May and June, the island of Cuba is in the glory of high summer, and enjoying the healthiest period of its yearly returns. After the early part of June, the unacclimated would do well to take passage up the gulf to New Orleans, and come gradually north with the advancing season. From the proximity of Cuba in the north-western parts to our own continent, the climate is variable, and a few hundred feet above the level of the sea ice is sometimes formed, but snow never falls upon the island, though it is occasionally visited in this region by hail storms. In the cities and near the swamps, the yellow fever, that scourge of all hot climates, prevails from the middle of June to the last of October; but in the interior of the island, where the visitor is at a wholesome distance from humidity and stagnant water, it is no more unhealthy than our own cities in summer. It is doubtful if Havana, even in the fever season, is as unhealthy as New Orleans during the same period of the year.