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business in 1860. The principal machines ordinarily in use in the print- ing trade to-day were at Baxter's period only in their infancy. By now you will have become thoroughly familiarised with the fact that independent of the difference of the material on which Baxter engraved his key plate and his colour blocks, the grand distinction between the two arts is that one is in Intaglio, i.e., hollowed out, and the other is in relief. The Intaglio method of Printing in Baxter's day can be very briefly described. The ink is dabbed into the hollowed lines or cuts; and when these are sufficiently charged with ink, the surface of the Baxter's Process 47 plate is wiped off on an oiled sheet. The Plate having thus been pre- pared, it is covered with the sheet of paper intended to receive the engraving and is subjected to the action of the rolling or copper-plate printer's press; and the impression is obtained by the paper being pressed into the inked incisions. The sheet of Paper could be placed in any position on the copper or steel plate for pulling the impression, so long as it covered the whole surface, because Baxter in order to obtain the " register," i.e., the super- imposition of the blocks one above the other, tells us in his specification that in the engraving of his key plate he makes several spots on its surface (one at each of the four corners as no doubt you have seen on many of his untrimmed prints) which spots are for the purpose of piercing each sheet by means of the Pointers on the tympan of his Relief Printing " Press " to bring them into the same position each time to take the various colour blocks. As the lines of Baxter's Engraved Colour blocks on wood are pro-