]|[Illustration]
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\ | R | W | \ | \
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1. LEFT THUMB |2. LEFT INDEX |3. LEFT |4. LEFT RING |5. LEFT LITTLE
| | MIDDLE | |
I| M | 18| I| 15
[Illustration]|[Illustration]|[Illustration]|[Illustration]|[Illustration]
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W | W | / | W | /
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The chart, figure 351, will illustrate the manner in which the ridge
counts are translated into the symbols I and O so they may be grouped
and sequenced with the whorl tracings I, M and O.

THE MAJOR DIVISION: The major division is placed just to the left of
the primary in the classification formula. Where whorls appear in the
thumbs the major division reflects the whorl tracings just as the
subsecondary does. For example, a major division of I over M in the
primary 5 over 17 would reflect an inner-traced whorl over a
meeting-traced whorl in the thumbs. Where loops appear in the thumbs,
however, a table is used to translate the ridge counts into the small,
medium, or large groups, designated by the letters S, M, L. An
expanding table is used for the right thumb when large-count loops
appear in the left thumb, as shown in the chart (fig. 351). This table
is used because it affords a more equitable distribution of prints as
a whole, for filing purposes within the groups indicated.

[Illustration: 351. Classification Chart]

--RIGHT HAND--
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R THUMB |R INDEX |R MIDDLE |R RING |R LITTLE
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WHEN LEFT THUMB| 1-9 = I | 1-10 = I | 1-13 = I |
IS 16 OR LESS |10 AND OVER = O|11 AND OVER = O|14 AND OVER = O|
1-11 = S | | | |
12-16 = M | | | |
17 AND OVER = L| | | |
--------------------RIDGE COUNT OF SECOND SUBSECONDARY---------------------
WH