Figures 46 to 48 reflect interlocking loops at the center, while figure 49 has two loops side by side at the center. In all these cases the two loops are considered as one. In figure 46, when the shoulder line X-X is drawn it is found to cross exactly at the point of intersection of the two loops. The two are considered as one, with two rods, the core being at C. In figure 48, the shoulder line X-X is below the point of intersection of the loops. Again the two are treated as one, with two rods, the core being place at C. In figure 49, the two are treated as one, with two rods, the core being place at C.
In figure 50, the delta is formed by a bifurcation which is not connected with either of the type lines. The first ridge count in this instance is ridge C. If the bifurcation were not present, the delta would be a point on ridge C and the first ridge count would be ridge D. In figure 51, the ridge which bifurcates is connected with the lower typr line. The delta in this would be located on the bifurcation as designated and the first ridge count would be ridge C. Figure 52 reflects the same type of delta shown in the previous figure in that the ridge is bifurcating from a type line and then bifurcates again to form the delta.
A WHITE SPACE MUST INTERVENE BETWEEN THE DELTA AND THE FIRST RIDGE COUNT. If no such interval exists, the first ridge must be disregarded. In figures 53 and 54, the first ridge beyond the delta is counted. In figure 55, it is not counted because there is no interval between it and the delta. Notice that the ridge running from the delta toward the core is in a straight line between them. If it were not, of course, an interval would intervene as in figures 53 and 54.
