site logo

The Plain Whorl


The plain whorl consists of the simplest form of whorl construction

and is the most common of the whorl subdivisions. It is designated by

the symbol W for both general classification and extension purposes.



The plain 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 touch

> or cross at least one 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 cannot be construed as a circuit. An

appendage connected at that point is considered to spoil the recurve

on that side.



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.













More

;