The Laws of Health

aërated air-sacs alcohol allowed amount apparatus become blood body breathed calcium carbonate called carbonic acid cause cesspools chimney cholera cisterns closet cold deaths digestible digestive apparatus diphtheria disease drains drink enteric fever epidemic escape especially excretal matters external air fever filtering material flue food substances foul air foul water frequently gases gastric juice hard waters house sewer important impure intestinal intestinal canal iron kidneys less liable liver London clay Luigi Cornaro lungs manure means meat milk mineral salts necessary nervous nitrogenous nitrogenous substances non-nitrogenous nuisance nutritious outfall sewers overflow pipes oxidation oxygen persons placed poison prevent produced products of combustion pure purified rain-water refuse matters removed rendered sewage siphon trap skin small quantities small-pox soil solid solution sufficient surface suspended matters tion tissues towns tube typhoid fever utilised vaccination valve vegetable ventilation warm waste pipe waste substances water supply window