Other Articles Needed. We have us provided now with the apparatus required to make a photograph. For portraiture, various other articles are needed before we can enter the studio for work. Among these are a head-rest, for the proper support of the figure, chairs. backgrounds, tables, and other accessories, with side- and hand-screens in number varying to suit the fancy of the user and the variety of the subjects which come to him. Upon all of these more will be found farther on, when work is absolutely entered into. First, we must consider the optical tools needed for our purposes. It shall be done in the next lesson.