# Page:Carroll - Game of Logic.djvu/38

inside the central Square is supposed to have the attribute ${\displaystyle m}$, and everything outside it the attribute ${\displaystyle m^{\prime }}$, i.e. "not-${\displaystyle m}$".)
You had better adopt the rule to make ${\displaystyle m}$ mean the Attribute which occurs in the Middle Term or Terms. (I have chosen ${\displaystyle m}$ as the symbol, because 'middle' begins with 'm'.)
Let us express, then, "no nice Cakes are unwholesome (Cakes)", i.e. "no ${\displaystyle y}$-Cakes are ${\displaystyle m^{\prime }}$-(Cakes)". This tells us that none of the Cakes belonging to the ${\displaystyle y}$-half of the cupboard are in its ${\displaystyle m^{\prime }}$-compartments (i.e. the ones outside the central Square). Hence the two compartments, No. 9 and No. 15, are both 'empty'; and we must place a grey counter in each of them, thus: