In plants the various organs often radiate from an axis, in such a manner that on turning the plant about this axis the various forms are Superposed thrice, four, or more often five times in one complete revolution.
"The Mechanism of Life"
Stéphane Leduc
Pasteur found that the paratartrates were composed of crystals that were dissymmetrical-that is, whose image reflected in a mirror cannot be Superposed on the crystal itself.
"Makers of Modern Medicine"
James J. Walsh
It cannot be Superposed on the hand of which it is the reflection any more than the left hand can be Superposed on the right and have corresponding parts occupy corresponding places.
"Makers of Modern Medicine"
James J. Walsh