In some cases, an image appears to be in two parts, with the right part cut off in the middle of the image. Also, some images have rounded corners. These two features exist because the original negatives were taken with stereographic cameras. Such cameras produced a negative with two views of the same image side by side on the glass plate. Prints from such negatives were intended to be seen through a stereographic viewer, which would provide a three-dimensional image. Viewing stereographic prints was a popular pastime in the last half of the nineteenth century. The rounded corner on an image often indicates that the original negative had a stereographic format, as does the appearance of two images on the print. In some instances, one half has been extensively cropped, because when original negatives were copied onto film, one image often was enlarged to fill up the 8" x 10" copy negative. In the process, part of the second image often was cropped.