Under no circumstances is ventilation of the sick-room so essential as in cases of febrile diseases, usually considered infectious; such as typhus and puerperal fevers, influenza, hooping-cough, small- and chicken-pox, scarlet fever, measles, and erysipelas: all these are considered communicable through the air; but there is little danger of infection being thus communicated, provided the room is kept thoroughly ventilated.

NECESSITY OF GOOD VENTILATION IN ROOMS LIGHTED WITH GAS.In dwelling-houses lighted by gas, the frequent renewal of the air is of great importance.

Avoid ventilation by means of doors, for the stale air of the house, kitchen smells, and noises made by the occupants of the house, are apt to reach the sick-room.

SEE Coxe, Wallace H. Tunnel construction ventilation with Du Pont Ventube.

The largest vessel of the fleet was the common dining-room, and owed its excellent ventilation to two holes opposite each other torn out close to the ceiling by a shell while Gordon had been lunching a few days before.

The houses had no upper story, but were formed by the enclosure of two or more quadrangles, each surrounded by courts opening into rooms, and receiving air and ventilation from the centre open square or court.

The room in which they were confined was occupied by about a hundred native criminals; there was no ventilation beyond that afforded by the cracks in the walls, and the continual stench and heat were almost unbearable.

The question of a practicable and economical system of ventilation for our homes, schoolrooms, workshops, and public places presents many difficult and perplexing problems.

Ventilation between the earth and floor is rarely seen in Cuba.