A Handbook of Hygiene

according allowed already amount animal appear arrangements average become buildings carbonic acid carried cause Chapter cholera classes cleaned close common condition considerable consists construction contained cubic feet direct discharged disease disinfected district drains effects efficiently enteric epidemic evidence examination experiments extent fever filtering fresh air gallons give given ground head heat hospital hour important impurities increased infectious instances least less lime matter means measures medical officer nature necessary nuisance observations obtained occupied officer organic passed patient persons pipes population possible practical prevent prisoners Privy produced proved quantity regard removed sanitary authority sewage sewers situated soil solution space streets sufficient supply surface taken tion towns tube various vegetable ventilation walls ward whole