Care and Improvement of One's Environment.—Man can modify or change his surroundings by making this artificial environment favorable to live in. He may heat his dwellings in winter and cool them in summer so as to maintain a moderate and nearly constant temperature. He may see that his dwellings have windows so as to let light and air pass in and out. He may have light at night and shade by day from intense light. He may have a system of pure water supply and may see that drains or sewers carry away his wastes. He may see to it that people ill with "catching" or infectious diseases are isolated or quarantined from others. This care of the artificial environment is known as sanitation, while the care of the individual for himself within the environment is known as hygiene. It will be the chief end of this book to show girls and boys how they may become good citizens through the proper control of personal hygiene and sanitation.
Reference Books
elementary
Hunter, Laboratory Problems in Civic Biology. American Book Company.
Hough and Sedgwick, Elements of Hygiene and Sanitation. Ginn and Company.
Jordan and Kellogg, Animal Life. Appleton.
Sharpe, A Laboratory Manual for the Solution of Problems in Biology, p. 95. American Book Company.
Tolman, Hygiene for the Worker. American Book Company.
advanced
Allen, Civics and Health. Ginn and Company.