It is unnecessary to discuss further the merits of these different preparations, the very excellent manner in which they are now got up for the artist renders this unnecessary; our object being only to point out the course to be pursued in repairing the dilapidated state in which so many pictures of value have fallen. ,Having, however, availed myself of opportunities of becoming acquainted with the operative details of the modern system of manufacturing artists' canvas, I have been enabled to observe that canvas grounds are produced of such tenacity, durability, and general excellence, as were never before attainable for the purposes of art, and which must materially aid the preservation of modern works executed upon them; they have the most important merit of not being liable to crack, or to peal or tear away from the cloth they are worked on, and, beyond all, damp has but little or no influence upon them.,