Glass is scarcely known in Cuban windows; the glazier has yet to make his début in Havana. The most pretentious as well as the humblest of the town-houses have the broad, high, projecting window, reaching from floor to ceiling, secured only by heavy horizontal iron bars, prison-like in effect, through which, as one passes along the narrow streets, it is nearly impossible to avoid glancing in upon domestic scenes that frequently exhibit the female portion of the family en déshabillé. Sometimes a loose lace curtain intervenes, but even this is unusual, the freest circulation of fresh air being quite necessary. The eye penetrates the whole interior of domestic life, as at Yokohama or Tokio. Indeed, the manners of the female occupants seem to court this attention from without, coming freely as they do to the windows to chat with passers-by. Once inside of these dwelling-houses there are no doors, curtains alone shutting off the communication between chambers, sitting-rooms, and corridors. These curtains, when not looped up, are sufficient to keep out persons of the household or strangers, it being the custom always to speak, in place of knocking, before passing a curtain; but the little naked negro children, male and female, creep under these curtains without restraint, while parrots, pigeons, and fowls generally make common use of all nooks and corners of the house. Doors might keep these out of one's room, but curtains do not. The division walls between the apartments in private houses, like those in the hotels, often reach but two thirds of the way up to the walls, thus affording free circulation of air, but rendering privacy impossible. One reason why the Cubans all possess such broad expanded chests is doubtless owing to the fact that their lungs find free action at all times. They live, as it were, in the open air. The effect of this upon strangers is seen and felt, producing a sense of physical exhilaration, fine spirits, and a good appetite. It would be impossible to live in a dwelling-house built in our close, secure style, if it were placed in the city of Havana. The laundress takes possession of the roof of the house during the day, but it is the place of social gathering at night, when the family and their guests enjoy the sea-breeze which sweeps in from the Gulf of Mexico. On a clear, bright moonlight night the effect is very striking as one looks across the house-tops, nearly all being upon a level. Many cheerful circles are gathered here and there, some dancing to the notes of a guitar, some singing, and others engaged in quiet games. Merry peals of laughter come from one direction and another, telling of light and thoughtless hearts among the family groups. Occasionally there is borne along the range of roofs the swelling but distant strains of the military band playing in the Plaza de Isabella, while the moon looks calmly down from a sky whose intensely blue vault is only broken by stars.