
Thoma Pynchon writes in his novel Mason & Dixon, about
a certain Colonel Bouquet:
His Scheme is to tessellate
across the plains a system of
identical units, each containing five Squares in the shape of a
Greek Cross, with each central square controlling the four radiating
from it,-'tho, as to their size, no one is agreed, with some saying a
mile on a side, others ten, or an Hundred,- Ohio, and the western
Prairie beyond presenting
such an Enigma, that no one
knows what scale to work at.
Patterns with symmetry type p4m