"The printing was done on moist paper with Chinese ink and colour applied to the blocks with flat brushes. A little rice paste was usually mixed with the pigments to keep them from running, and to increase their brightness. Sometimes dry rice flour was dusted over the blocks after they were charged. To this method of charging the blocks much of the beauty of the result may be attributed. The colour could be modified, graded, or changed at will, the blocks covered entirely or partially. Hard, mechanical accuracy was avoided. Impressions differed even when the printer's aim was uniformity. Sometimes in inking the 'key block,' which was usually the last one impressed, some of the lines would fail to receive the pigment, or would be overcharged. This was especially liable to happen when the blocks were worn and the edges of the lines became rounded. A little more or a little less pigment sometimes made a decided difference in the tone of the print, and, it may be noted, has not infrequently determined the nature and extent of the discoloration wrought by time. "In printing, a sheet of paper was laid upon the block and the printer rubbed off the impression, using for the purpose a kind of pad called a baren. This was applied to the back of the paper and manipulated with a circular movement of the hand. By varying the degree of pressure the colour could be forced deep into the paper, or left upon the outer fibres only, so that the whiteness of those below the surface would shine through, giving the peculiar effect of light which is seen at its best in some of the surimono (prints designed for distribution at New Year's or other particular occasion) by Hokusai. Uninked blocks were used for embossing portions of the designs. The skill of the printer was a large factor in producing the best results. Even the brilliancy of the colour resulted largely from his manipulations of the pigments and various little tricks in their application. The first impressions were not the best, some forty or fifty having to be pulled before the blocks would take the colour properly. Many kinds of paper were used. For the best of the old prints it was thick, spongy in texture, and of an almost ivory tone. The finest specimens were printed under the direct personal supervision of the artists who designed them. Every detail was looked after with the utmost care. No pains were spared in mixing the tints, in charging the blocks, in laying on the paper so as to secure perfect register, in regulating the pressure so as to get the best possible impressions. Experiments were often tried by varying the colour schemes. Prints of important series, as for example Hokusai's famous 'Thirty-six Views of Fuji,' are met with in widely divergent colourings."