Classification and uses of finger prints / by Sir E.R. Henry.

  • Edward Henry
Date:
1913
Catalogue details

Licence: In copyright

Credit: Classification and uses of finger prints / by Sir E.R. Henry. Source: Wellcome Collection.

    110/168 page 100
    may be divergence of opinion as to there being exactly 14 counts in the right little finger. To eliminate the possibility of error arising from this, he decides to search through the subgroups of is u (do)’ which have from 12 to 16 counts in the right little finger. Being confident of the correct- ness of his own counting, he would first search the subgroup with 14 counts in the little finger, then the subgroups with 15 and 16, and then the sub- groups with 13 and 12. If the slip he is looking for is in the Criminal Record, he knows it must be among subgroups 12 to 16 of ^(jq), which file he picks out, and he concerns himself no further with ridge counts, but concentrates attention upon the salient features of the slip. The right thumb is a Lateral Pocket, the left thumb a Twinned Loop. He turns the slips of subgroups 12 to 16 over rapidly, much in the same way as a pile of bank notes are looked through, and delays only when he comes to a slip the right thumb impression of which is a Lateral Pocket, and his eye then glances at the left thumb. If it is not a Twinned Loop, he passes on to the next slip, and finally stops at one which has the right thumb a Lateral Pocket, the left thumb a Twinned Loop, and the two ring fingers Central Pockets. He then compares the ridge characteristics ol one or two impressions on the slip in his hand with the corresponding impressions of the slip in the Record, and if they agree he knows that his search has been successful. The Central Office then inform the requisitioning police that the so called m. Jones was, on a specified date, convicted under the name of
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