The Prevention of Measles

admit agent amount animals appear assumed asylums attack become bedding bedroom brought causation cause classes common concerned conclusion connected consequence contagion contagium contamination course Crown 8vo damp Demy disease doubt Edition effects efficient epidemic escape etiologists evidence exemption experiments exposed fact fever followed forms fungus further given Illustrations importance infection infective disease inference inoculation inquirer instances kind known less light look material matter means measles nature observations occur ordinary organism origin outbreak paillasses parasitism patients perhaps period person phenomena poison position practical prevention probably question reasons referred regard relation Salisbury Salisbury's schools Second seen shown similar Small crown soil sound species spores straw fungi straw mildew submit sufficient suggested supposed taken theory thing thought tion vegetation whole