THE characteristic deficiencies of English text-books are painfully conspicuous in most of the current works on practical geometry. Take a second-rate cookery-book, and shuffle the recipes at random; ...

THESE works are by mathematical masters at Rugby School. Their united aim (in connection with Mr. Wilson's two previous parts) is to provide a complete course of geometrical teaching, and so to meet a ...

For more than five centuries, Leonardo da Vinci’s Vitruvian Man has invited admiration but also bafflement. With its harmonious symmetry of limbs outstretched in both a square and a circle, the ...

Although it includes work by Leonardo, Raphael and Michelangelo, this exhibition of Renaissance drawings also includes much ...