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-- --------------------------------------------------------------------------- R THUMB |R INDEX |R MIDDLE |R RING |R LITTLE --------------------------------------------------------------------------- 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--------------------- WHEN LEFT THUMB| 1-5 = S | 1-8 = S | 1-10 = S | IS 17 OR OVER | 6-12 = M | 9-14 = M |11-18 = M | 1-17 = S |13 AND OVER = L|15 AND OVER = L|19 AND OVER = L| 19-22 = M | | | | 23 AND OVER = L| | | | --------------------------------------------------------------------------- --LEFT HAND-- --------------------------------------------------------------------------- L THUMB |L INDEX |L MIDDLE |L RING |L LITTLE --------------------------------------------------------------------------- 1-11 = S | | | | 12-16 = M |<------------------VALUES SAME AS ABOVE-------------------> 17 AND OVER = L| | | | --------------------------------------------------------------------------- Table for major divisions of loops: _Left thumb denominator_ _Right thumb numerator_ { 1 to 11, inclusive, S (small). 1 to 11, inclusive, S (small) { 12 to 16, inclusive, M (medium). { 17 or more ridges, L (large).