In making permanent case records of rare or unusual skin affections, a photomicrograph which shows the most typical and striking of the changes that have taken place is often of decided value. The very considerable cost of an outfit for making these pictures, however, has prevented many individual workers from possessing them.
Formerly, I employed an instrument improvised from an ordinary hand camera, the end of the microscope barrel being fitted directly to the lens board of the machine, and sunlight serving for illumination. As might be expected, the pictures secured were far from perfect, but they were better than none. At present I am using a somewhat similar but much more efficient apparatus, which was constructed at a very small cost. Figure 1 gives a fairly clear idea of the general outlines of the appliance. It consists of a base, or platform, on which is placed a focusing-box, a