As the photographer does not possess the advantages of the painter, to produce his effects by contrast of colour, it behoves him to be much more particular in his treatment of light and shade; but most particularly in his choice of a background that will most harmonise with the dress, spirit, style, and condition in life of his sitter. It is always possible for a member of any class of the community to be surrounded or relieved by a plain, quiet background; but it is not possible, in nine cases out of ten, for some individuals who sit for their portraits ever to be dwellers in marble halls, loungers in the most gorgeous conservatories, or strollers in such delightful gardens. In addition to the unfitness of such scenes to the character and every-day life of the sitter, they are the most unsuitable for pictorial effect that can possibly be employed. For, instead of directing attention to the principal object, they disturb the mind, and set it wandering all over the picture, and interfere most seriously with that quiet contemplation of the features which is so necessary to enable the beholder to discover all the characteristic points in the portrait. When the likeness is a very bad one, this may be advantageous, on the principle of putting an ornamental border round a bad picture with the view of distracting the attention of the observer, and preventing the eye from resting long enough on any one spot to discover the defects. When clouds are introduced as backgrounds to portraits, they should not be of that small, flickering character previously alluded to, but broad, dark, and "massy," so as to impart by contrast more strength of light to the head; and the lighter parts of the clouds should be judiciously placed either above or below the head, so as to carry the light into other parts of the picture, and prevent the strongly-lighted head appearing a spot. The best examples of that character will be found in the engraved portraits by Reynolds, Lawrence, Gainsborough, and others, many of which are easily obtained at the old print shops; some have appeared in the _Art Journal_. As guides for introducing cloud effects, accessories, and landscape bits into the backgrounds of carte-de-visite and cabinet pictures, no better examples can be cited than those exquisite little figure subjects by R. Westall, R.A., illustrating Sharpe's Editions of the Old Poets. The engravings are about the size of cartes-de-visite, and are in themselves beautiful examples of composition, light, and shade, and appropriateness of accessory to the condition and situation of the figures, affording invaluable suggestions to the photographer in the arrangement of his sitter, or groups, and in the choice of suitable accessories and backgrounds. Such examples are easily obtained. Almost any old bookstall in London possesses one or more of those works, and each little volume contains at least half-a-dozen of these exquisite little gems of art.