Show Prnetratlon of Camera. A ManchfEter photographer relates that he a photograph of a child who w?k Hiparently In good health and had a clear skin. The negative Bhowed the face to be thickly covered with an ft option. Three days afterward after-ward the child was covered with spots due to prickly heat. The camera had een and photographed tho eruption three days before It was visible to tho naked eye. ll is said that another case of n similar kind Is recorded where a rhlld showed spots on his portrait which were Invisible on his face a fortnight previous to an attack of hinallpox. |