Show photography and crime the exhibition of the photographic society of great britain ig of great interest both from the artistic and the scientific point of view dr P jeserich a german has devoted his attention to the development of photography as a means of assisting the administration of the law the screen which contains cant ains dr Jes erichs plates is one of the chief curiosities of the exhibition he has shown by enlarging photographs taken upon sensitized plates that it is possible to detect certain kinds of forgery in the most unimpeachable way for example where a figure or a word has been altered and thia is one of the commonest kinds of forgery the different inks em aloyed appear in the plate in quite different colors similarly where a na first leen written in pencil and then traced over in ink however carefully the pencil marks have been erased bome faint traces of tiie plumbago are sure to remain in the interstices of the paper and these aro revealed in the magnified photograph dr Jes erichs photographs of hair and of pure and impure blood before and after treatment with reducing agents are also most curious and several stories are told of the uee that has been made of them in murder trials in germany london times |