ng a complete circuit). The part of the
circuit in front of the right delta, however, cannot be construed as a
recurving ridge because of the appendage abutting upon it in the line
of flow. This pattern, therefore, is a one-count loop.

Figure 299 is a very difficult and unusual pattern. It has
characteristics of three types, the whorl, the loop, and the tented
arch. It is given the preference of an accidental type of whorl (loop
over a tented arch). This pattern should be referenced both as a loop
and as a tented arch.

Figure 300 is shown for the purpose of explaining that in the whorl,
as this print is, appendages at the top of the recurve will not spoil
or affect the recurve. Hence, the impression is a good whorl of the
central pocket loop type and needs no reference.

Figure 301 is classified as a whorl of the double loop type. There are
present two distinct loops and two deltas (the right delta is not
present as the impression was not rolled sufficiently). The pattern is
unusual because the loops are side by side and flowing in the same
direction. The tracing is an inner tracing.

Figure 302 should present no difficulty. It is classified as a plain
arch for its ridge construction follows the rule of a plain arch,
i.e., "enter one side and flow or tend to flow to the other."

Figure 303 is a plain arch. The dot at the center is not elongated
enough to be considered an upthrust. A dot, even though as thick and
heavy as the surrounding ridges, is not considered for any purpose but
ridge counting or fixing a delta.

Figure 304 is a pattern somewhat similar to the previous illustration.
As indicated before, dots are considered as ridges only in ridge
counting and fixing a delta. This pattern, therefore, must be
classified as a plain arch, rather than a tented arch with two ending
ridges and a delta formation.

Figure 305, although showing an appendage upon each recurve on the
left side, is classified as a whorl of the central pocket loop type,
with two deltas and a recurve in front of each. To spoil the recurve
of a whorl the appendage must be connected to the recurve at the point
of contact with the line of flow.

[Illustration: 303]

[Illustration: 304]

[Illustration: 305]

[Illustration: 306]

In figure 306, the impression has two equally good loop formations. As
it has but one delta, it cannot be classified as a whorl of the double
loop type nor as a loop since it would be difficult to make a
pref