e inner delta formation would be located upon
the only looping ridge of the upper loop formation. Since the delta
would be located on the only recurve, this recurving ridge is
eliminated from consideration. The pattern is classified as a loop.

Figure 320 is a loop of two counts, with the delta at B. There is a
ridge making a complete circuit present, but point A cannot be used as
a delta because it answers the definition of a type line. It should be
considered a delta only if it presented an angular formation. Placing
the delta upon the recurve would spoil that recurve.

[Illustration: 318]

[Illustration: 319]

Figure 321 shows two separate looping ridge formations appearing side
by side and upon the same side of the delta. The core in such case is
placed upon the nearer shoulder of the farther looping ridge from the
delta, the two looping ridges being considered as one loop with two
rods rising as high as the shoulder. The ridge count would be four
(fig. 49).

Figure 322 is an accidental whorl. It is classified thus because it
contains elements of three different patterns, the loop, the double
loop, and the accidental. In such case the order of preference
governs. The delta at the left is point A. The delta at the right is
point C. This point becomes the delta since it is the point nearest
the center of the divergence of the type lines. Point B is eliminated
from consideration as a delta since type lines may not proceed from a
bifurcation unless they flow parallel after the bifurcation and before
diverging.

[Illustration: 320]

[Illustration: 321]

[Illustration: 322]

Figure 323 is a loop. There are two delta formations but the dots
cannot be considered as obstructions crossing the line of flow at
right angles. This precludes the classification of the central pocket
loop type of whorl.

Figure 324 is a loop, the two recurving ridges have appendages and are
considered spoiled. The pattern cannot, therefore, be a whorl even
though two delta formations are present.

[Illustration: 323]

[Illustration: 324]

Figure 325 is classified as a tented arch. If examined closely the
pattern will be seen to have an appendage abutting at a right angle
between the shoulders of each possible recurve. Thus no sufficient
recurve is present.

Figure 326 is a plain arch. There is present no angle which approaches
a right angle. Points A, B, and X are merely bifurcations rather than
an abutment of two ridges at an a