Each part of this work is enriched by diagrams of great beauty, direct emanations of principle, and, consequently, presenting entirely new combinations of form. Had our space permitted, we should have made some extracts from this “Essay on Ornamental Design;” and we would have done so, because of the discriminating taste by which it is pervaded, and the forcible observations which it contains; but we cannot venture on the indulgence.

XI.
In 4to, 17 Plates and 38 Woodcuts, price 25s.,
PROPORTION, OR THE GEOMETRIC PRINCIPLE OF BEAUTY ANALYSED.

XII.
In 4to, 18 Plates and numerous Woodcuts, price 15s.,
THE NATURAL PRINCIPLES AND ANALOGY OF THE HARMONY OF FORM.

From the Edinburgh Review.

Notwithstanding some trivial points of difference between Mr Hay’s views and our own, we have derived the greatest pleasure from the perusal of these works. They are all composed with accuracy and even elegance. His opinions and views are distinctly brought before the reader, and stated with that modesty which characterises genius, and that firmness which indicates truth.

From Blackwood’s Magazine.

We have no doubt that when Mr Hay’s Art-discovery is duly developed and taught, as it should be, in our schools, it will do more to improve the general taste than anything which has yet been devised.