To secure an eveness of tint on paper it should be first moistened on the back by sponging, and blotting off with bibulous paper. It should then be pinned on a board, the moist side downwards, so that two of its edges--the right and lower ones--project a little over those of the board. Incline the board twenty or thirty degrees to the horizon, and apply the tincture with a brush in strokes from right to left, taking care not to go over the edges which rests on the board, but to pass clearly over those that project; and also observing to carry the tint from below upwards by quick sweeping strokes, leaving no dry spaces between them. Cross these with other strokes from above downwards, leaving no floating liquid on the paper. Dry as quickly as possible, avoiding, however, such heat as may injure the tint. CHAP. IV. A FEW HINTS AND SUGGESTIONS TO DAGUERREOTYPISTS. There are very few who may not be capable of practising the Photographic art, either on paper, or metalic plates--but, like all other professions, some are more clever in its various processes than others. Impatience is a great drawback to perfect success, and combined with laziness is a decided enemy. Besides this, no one can excel in Photography who does not possess a natural taste for the fine arts, who is not quick in discerning grace and beauty--is regardless of the principles of perspective, foreshortening and other rules of drawing, and who sets about it merely for the sake of gain--without the least ambition to rise to the first rank, both in its practice and theory. There is no profession or trade in which a slovenly manner will not show itself, and none where its effects will be more apparent than this. In order to be great in any pursuit, we must be ourselves, and keep all things, in order. In your show and reception rooms, let neatness prevail; have your specimens so placed--leaning slightly forward--as to obtain the strongest light upon them, and at the same time prevent that glassiness of appearance which detracts so materially from the effect they are intended to produce. If possible, let the light be of a north-western aspect, mellowed by curtains of a semitransparent hue. Your show-cases, at the door, should be kept well cleaned. I have often been disgusted while attempting to examine portraits in the cases of our artists, at the greasy coating and marks of dirty fingers upon the glass and frame enclosing them. Believe it, many a good customer is lost for no other reason.