. Guide to finger-print identification [electronic resource]. n everyday care is taken from the moment of discovery in case of crime, goodphotographs may usually be obtained from any of those varying conditions under which they are made will involve carefulconsideration of each case. Criminals in the haste and urgency ofsome deed of darkness do not stay to consider thoughtfully the wantsof the jurist, yet under those very conditions remarkably good imprintshave often been made, leading to good circumstantial evidence, andto conviction by a jury. Such accidental and unprem
. Guide to finger-print identification [electronic resource]. n everyday care is taken from the moment of discovery in case of crime, goodphotographs may usually be obtained from any of those varying conditions under which they are made will involve carefulconsideration of each case. Criminals in the haste and urgency ofsome deed of darkness do not stay to consider thoughtfully the wantsof the jurist, yet under those very conditions remarkably good imprintshave often been made, leading to good circumstantial evidence, andto conviction by a jury. Such accidental and unpremeditated smudges as are now oftenoffered as evidence in our courts will require detailed and very carefulconsideration. Mirror Patterns. This is a matter that will be seen to have great practical import-ance. The impressed or printed pattern, as in ordinary printing,shows just the reverse arrangement existing in the actual ridges andfurrows of the skin. A loop or whorl veering to the left in print,actually in nature veers to the right, and so on a. b. c. Fig. 5. Mirror Patterns. In fig. 5, for example, the actual ridge pattern or dactylograph a maybe that of John Doe, while b is that of Richard Roe. Now letRichards finger-print by some mishap in photography take the corres-ponding mirror pattern<r, and at once Richard Roe is in urgent 21 danger of being hanged as John Doe. These are diagrams of twoactual fingers from different hands, and the correspondences weremuch greater than the maximum which has been said never to beexceeded by two really different fingers. Mirror patterns of a complex kind do not often occur, for manywhich appear to be such will reveal to careful scrutiny divergences ofa non-mirror quality. Now this point may seem to be clear andsimple, and to many who have not estimated its gravity even we recall, however, how our early Victorian warriors, returningfrom the Crimea, were disconcerted by finding the faithful daguerro-type pourtra
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