We have seen that the plates of the Halfpenny, One Penny, and Sixpence contained sixty stamps, in six horizontal rows of ten, and that of the Five Shillings twenty stamps, in four horizontal rows of five. The “Crown C.A.” paper was, therefore, quite large enough to be divided horizontally, so as to take three impressions of any of these plates. The result of this division of the sheet is that the impression of the plate that happens to be printed on the middle portion has one row of stamps, either partly or wholly, watermarked with as much of the inscription, “Crown Agents,” as the length of the plate will permit; and specimens of all the above values, as well as of the two issues of the One Penny surcharged “2½ Pence,” and the Six Pence surcharged “Five Pence,” by Messrs. De La Rue & Co. are found so watermarked. The plates of the Four Pence and One Shilling, which only contained thirty stamps in three horizontal rows of ten, admitted of the paper being so cut that the words “Crown Agents” are only found watermarked in the margins of the sheets of these two values. The sheets printed from Messrs. Perkins, Bacon & Co.’s plates were even less adapted to the perforating machines used by Messrs. De La Rue & Co. for stamps of their own design printed on “Crown C.A.” paper, than, as we have seen, were the Perkins-Bacon plates to that paper. These machines, to which we give the name of “comb,” perforate the top and two sides of every stamp in an entire horizontal row at each descent of the pins. The second descent of the pins, therefore, perforates the bottom of the stamps in the first row and at the same time the top and two sides of the stamps of the second row. This process is continued through the sheet until the bottom of it is reached, when the last descent of the pins perforates the bottom of the lowest row of stamps, and at the same time continues the vertical lines of perforation into the bottom margin of the sheet. If the sheet has been put to the machine in an inverted position, it is the _top_ margin we find perforated vertically. The machines are, however, so constructed that in the centre of the long line of pins two of the vertical lines of the “comb” are placed much closer together than the rest, in order to perforate each side of the narrow central space separating the panes of stamps—_vide_ our description of the paper watermarked “Crown C.A.” This arrangement of the pins makes the machine utterly useless for perforating a row of more than six stamps placed close together. In consequence of this, the stamps of St. Vincent, and those of other Colonies for which Messrs. De La Rue & Co. use the old plates of Messrs. Perkins, Bacon & Co., have to be perforated by a different make of machine to that they usually employ for colonial stamps.