The print should be copied in contact with glass. Presuming the print is upon an ordinary mount (that is, not set hack in a cut out mount), place it in a frame containing a perfectly clear sheet of glass, and press into close contact. Set up the frame facing a full light, care being taken to avoid reflection by covering up objects that are reflected in the shadows of the picture. If a studio is not available, the copying should be done out of doors in full sunlight, in which case it may be possible to avoid grain without copying under glass. Slow plates are the most suitable, out much depends upon the degree of contrast iu the print, the printing process to be used, etc. For example, if the copy is very hard, and the picture is to be printed upon P.O.P., use a quick plate and the usual developer. If, on the other hand, the copy is flat and wanting in contrast, and the negative is for printing in carbon or for reproduction, use a process plate and hydroquinone developer.