The Home Medical Library, Volume 5

acid adulterants algæ animal annatto artificial bacteria breeding brick carbolic acid cellar cent chemical Chicory chimney cisterns cities clean CO₂ color combustion connected consistency constructed contamination copper sulphate decomposition deep detected diameter disease disinfectant edible entomologist excreta feet fish fixtures flushed formaldehyde fresh fungi furnace gases germs gills ground air ground water ground-water level heat hot-water house drain impurities inches infection infiltration galleries inlet iron kerosene lake larvæ located marsh material matter meat method milk moisture mosquito mosquito larvæ mushroom odor oleomargarine organic places plants plumbing poisonous pollution pond presence pressure prevent proper puffball pumping pure quantity rain water reservoirs salt sewage sink soil solution Spirogyra springs steam stem subsoil sulphur surface tank taste temperature tion Tonka bean trap tubes usually vegetable ventilation vertical walls warm waste pipes water supply water-closet water-proofing wind wrigglers