Suppose a bushel to be exactly round, And the depth, when measured, eight inches be found; If the breadth 18·789 inches you discover, This bushel is legal all England over: But a workman would make one of another frame, Seven inches and a half the depth of the same; Now say of what length must the diameter be, That it may with the former in measure agree.


WORTH TRYING.

A well known writer on mathematics, and a member of the Academy of Science, Paris, says that the most skilful calculator could not in less than a month find within a unit the cube root of 696536483318640035073641037.


A PROBLEM THAT WORRIED THE ANCIENTS.

Many profound works have been written on the following famous problem:—

“When a man says ‘I lie,’ does he lie, or does he not? If he lies he speaks the truth; if he speaks the truth he lies.”

Several philosophers studied themselves to death in vain attempts to solve it. Reader, have a “go” at it.