320 MODERN PAPER-MAKING amount of specks which may be allowed in a good sheet, and this can only be arrived at by long experience in sorting such papers. The sorters, who must have experience, while referring doubtful questions to their forewoman, use their own judgment as to what shall constitute a good sheet, and any sheet which does not quite reach this standard is placed on one side to be sold as retree. Those which contain blemishes in the third degree are put among the broken, and obviously faulty and useless sheets are sent back to the mill. [Greenfield Paper Mitt FIG. 137.—EXAMINING, CLEANING, BANDING AND PACKING Cons OF CIGARETTE PAPER So far we have dealt only with dirt or blemishes in the paper, and these may consist of all kinds of foreign matter, such as pieces of metal from the beater knives, chips from buttons, etc., small pieces of rubber, specks of improperly dissolved dye, splinters of wood, shive, shine, froth and many other things. Besides dirt, there are other things which may spoil an otherwise perfect sheet of paper; and the women must be on the look out for light or heavy sheets, which must not be allowed to pass, sheets which are too low or too high in finish, and those in which the water mark is defective, or, in the case of a paper in which the mark has to register, is out of place.