Part 8 (1/2)
Figures 194 to 211 are typical examples of the plain whorl type.
Figure 212 is, however, a loop, as the circuit is spoiled on one side by an appendage.
[Ill.u.s.tration: 194]
[Ill.u.s.tration: 195]
[Ill.u.s.tration: 196]
[Ill.u.s.tration: 197]
[Ill.u.s.tration: 198]
[Ill.u.s.tration: 199]
[Ill.u.s.tration: 200]
[Ill.u.s.tration: 201]
[Ill.u.s.tration: 202]
[Ill.u.s.tration: 203]
[Ill.u.s.tration: 204]
[Ill.u.s.tration: 205]
[Ill.u.s.tration: 206]
[Ill.u.s.tration: 207]
[Ill.u.s.tration: 208]
[Ill.u.s.tration: 209]
[Ill.u.s.tration: 210]
[Ill.u.s.tration: 211]
[Ill.u.s.tration: 212]
_Central pocket loop_
Within the whorl group, the subcla.s.sification type ”central pocket loop” is used for extension purposes only. In general cla.s.sification it is designated by the letter ”W”. Figures 213 to 236 are central pocket loops.
_The central pocket loop type of whorl has two deltas and at least one ridge making a complete circuit, which may be spiral, oval, circular, or any variant of a circle. An imaginary line drawn between the two deltas must not touch or cross any of the recurving ridges within the inner pattern area. A recurving ridge, however, which has an appendage connected with it in the line of flow and on the delta side cannot be construed as a circuit. An appendage connected at that point is considered to spoil the recurve on that side._
_In lieu of a recurve in front of the delta in the inner pattern area, an obstruction at right angles to the line of flow will suffice._
It is necessary that the inner line of flow be fixed artificially.