Guide to finger-print identification / by Henry Faulds.

  • Faulds, Henry, 1843-1930.
Date:
1905
Catalogue details

Licence: In copyright

Credit: Guide to finger-print identification / by Henry Faulds. Source: Wellcome Collection.

    111/124 page 73
    9- The enlargements should, as a rule, be made on a scale fixed officially, following either the metric or the English system. If the metric system is followed, enlargements of 20 diameters give very good results for putting before a jury. Uniformity is desirable for international use. Twenty-four diameters would be a good medium if the English measurements must be followed throughout. For petty trials enlargements may not be necessary in some cases where the pattern is somewhat complex and clear. 10. If a person suspected is in custody and his finger-prints can be legally secured, these should, if possible, be taken by some one experienced in official finger-printing. If that cannot be done, care must be taken to have the finger-prints of each hand in their natural order and to have available records or other evidence of the fact at the trial, together with the adhibited signature of the prisoner. [The question of cautioning the prisoner is a legal point which may arise]. 11. If any one finger-print of the accused or suspected person is deemed to afford evidence of identity with the originator of the smudge at the scene of crime, this should be photographically enlarged to the same scale as the enlarged smudge in question. The enlargement should also have attached to it a direct nature-print of the accused person’s corresponding finger for verification. 12. After the suspect’s finger-print has been examined by an expert it should have a fine circle drawn around it, similar to that with which the smudge has been surrounded. If other somewhat central points suggest themselves, other finger-prints (or direct photo- graphs) may be encircled in the same way as in the case of the smudge, so that an ultimate comparison may be made on the same area and scale. The centre and one radius may be marked and the circle drawn after enlargement. If direct photographs are used, they must, if possible, be produced in the same size as the original object, or evidence from agreement of measurements will be defeated. 13. The two enlargements may conveniently be mounted on stiff millboard, either side by side, or above and below. Uniformity in official procedure is desirable. When more than one suspect finger is in question, the enlarged smudge should be mounted along- side on each separate exhibit, for easy comparison.
    digitised image 1
    digitised image 2
    digitised image 3