Oliver Byrne (1810–1880) was a civil engineer and author of works on mathematics, geometry, and engineering. His most innovative educational work is this version of the first six books of Euclid’s “Elements” where he devised coloured graphic explanations of each geometric principle. The book is reknowned for its innovative graphic conception and its style which prefigures the modernist experiments of the Bauhaus and De Stijl movements. Information design writer Edward Tufte refers to the book in his work on graphic design and McLean in his “Victorian book design” of 1963. Reproduction of the original edition, printed in full color.