When the series is completed the whole may well be bound together. Smaller type, thinner paper and less margin would make a book readily portable, containing all that is indispensable to the student, and a good deal besides that the maturer artist will be none the worse for being reminded of. One who has attained some little facility with the pencil might adopt it as a sufficient mentor in the field or in the studio, and accept its guidance in a path to be perfected by his own powers, according to their measure, toward such pleasure, elevation of taste or fortune as art offers. Studies abound everywhere. The ruins, arched bridges and picturesque dwellings and other erections of Europe are but slenderly to be regretted by the American beginner. He has no lack of clouds, rocks, trees, houses, etc., embracing within their contours every possible line and shade. He may even learn precision of line and tint better than his Transatlantic brother, who is apt to be tempted into carelessness by the ragged variety and indecision of the objects offered by his surroundings and nearly unknown here. The broken and wandering touch suggested by the jagged stones of a crumbling castle is not that which one should begin by cultivating. Breadth and firmness in form, color and chiaroscuro are attainments to be first held in view, and never to be lost sight of. We have often wondered that the _technique_ of art should have so meagre a literature. Its philosophy and poetry have employed many pens, and been exhaustively analyzed, but this has been mostly the work of outsiders--of critics devoid even of the qualification laid down by Disraeli of having failed in the practical exploitation of the field they discuss, but for all that often powerful critics. Artists have rarely been able to paint their pictures in black and white and run them through the press. They cannot so display the infinite gradations that grow upon their canvas, nor trace in words the subtle principles which have presided at the birth of their works and of every part of them. General rules they can lay down, as poets can the elements of their own trade; but these rules are at the command of the veriest daub or rhymester; the manifold development of them to results almost divine remaining, even to those who achieve it in either walk, evasive and untraceable. The masters of verse and art have mapped out for us none of their secrets. The deductions we make from their practice are our deductions, not theirs. Raffaelle, if questioned, could only point to his palette spread with the common colors, and Homer had not even pen and ink. Our versifiers are provided with admirable paper and gold pens, and our artists, young and old, with the colors Elliott once told an inquirer he made his marvellous flesh-tints with--red, blue and yellow. Adventures of a Consul Abroad. By Luigi Monti. Boston: Lee & Shepard.