The Prevention of Measles

admit adults agent amount animals appear assumed asylums attack become bedding bedrooms brought causation cause classes common concerned conclusion connected consequence contagion contagium contamination course Crown 8vo damp disease doubt Edition effects efficient England epidemic escape etiologists evidence exemption experiments exposed fact families fever forms frequently fungus further given immunity infection infective disease inference inoculation instances introduced kind known less light looked material matter means measles Medical nature observations occur once ordinary organism origin outbreak paillasses parasitism passed patients perhaps period person phenomena poison position practical present principle probably question reasons regard relation Salisbury Salisbury's schools seen similar soil sound species spores straw bedding straw fungi straw mildew submit sufficient suggested supposed taken theory thing tion vegetation whole