Cayley´s sextic 1) has been studied for the first time by MacLaurin
Later Arthur (1821-1895) took a closer look to the curve. Archibald named the
curve after Cayley in a paper classifying some curves, a paper that was
published in 1900 in Strasbourg.
This sextic curve is also a sinusoidal spiral.
In Italian: sestica di Cayley