This section is from the book "Bepler's Handy Manual of Knowledge And Useful Infomation", by David Bepler. Also available from Amazon: Bepler's Handy Manual of Knowledge and Useful Information.
Each person requires at least from three to four cubic feet of air per minute. Ordinary windows allow about 8 cubic feet a minute to pass. Sleeping apartments require 1,000 feet to each occupant.
An ordinary gas flame requires as much air as nine persons.
A neat, clean, fresh aired, sweet, cheerful, well-arranged house, exerts a moral influence over its inmates, and makes the members of a family peaceable and considerate of each other's feelings; on the contrary, a filthy, squalid, noxious dwelling, contributes to make its inhabitants selfish, sensual, and regardless of the feelings of others.
Never sleep in a small, close bedroom, either during Summer or Winter, without free ventilation from door or windows, unless otherwise supplied with abundance of fresh air. It will be seen that a person's house usually corresponds with his character.