The Science of Fingerprints
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In our eReader you can find the full English version of the book. Read The Science of Fingerprints Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Science of Fingerprints
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(See subtopic ofthis chapter pertaining to "general photography. ") Of course, afterthe skin has been photographed the negative should be printed to givea reverse position so that the print will be comparable with inkedimpressions on fingerprint cards.
_Desiccation and charring_ The problem confronting the fingerprint examiner in treating fingerswhich are desiccated or dried and shriveled is that of distending andsoftening the skin. Desiccated fingers are generally found to have theouter layer ...of skin intact and the ridge detail fairly clear. However, due to the shrinking, numerous wrinkles will be present, and as thedrying process continues the skin and flesh harden until the fingersbecome almost as hard as stone.
It is sometimes possible to distend or swell the flesh by utilizing a1- to 3-percent solution of sodium hydroxide or potassium hydroxide, sometimes referred to as caustic potash. As a matter of caution, thisprocess should be tried with one finger before using it for theremaining fingers.
What to read after The Science of Fingerprints?
You can find similar books in the "Read Also" column, or choose other free books by United States. Federal Bureau of Investigation to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
(See subtopic ofthis chapter pertaining to "general photography. ") Of course, afterthe skin has been photographed the negative should be printed to givea reverse position so that the print will be comparable with inkedimpressions on fingerprint cards.
_Desiccation and charring_ The problem confronting the fingerprint examiner in treating fingerswhich are desiccated or dried and shriveled is that of distending andsoftening the skin. Desiccated fingers are generally found to have theouter layer ...of skin intact and the ridge detail fairly clear. However, due to the shrinking, numerous wrinkles will be present, and as thedrying process continues the skin and flesh harden until the fingersbecome almost as hard as stone.
It is sometimes possible to distend or swell the flesh by utilizing a1- to 3-percent solution of sodium hydroxide or potassium hydroxide, sometimes referred to as caustic potash. As a matter of caution, thisprocess should be tried with one finger before using it for theremaining fingers.
What to read after The Science of Fingerprints?
You can find similar books in the "Read Also" column, or choose other free books by United States. Federal Bureau of Investigation to read onlineMoreLess
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