# Page:Carroll - Notes by an Oxford Chiel.djvu/40

That the principle of Representation was known to the ancients is abundantly exemplified by Thucydides, who tells us that the favourite cry of encouragement during a trireme race was that touching allusion to Polar Co-ordinates which is still heard during the races of our own time, ${\displaystyle \rho _{5}}$, ${\displaystyle \rho _{6}}$, ${\displaystyle \cos \phi }$, they're gaining!'