While the 10d value is found on several sorts of paper no such extreme variation is provided as in the case of the stamps of 1851. The 7-1/2d and 1/2d values, printed at a later date, provide still fewer varieties, which would seem to indicate that as time progressed the manufacturers exercised a nicer discrimination in their choice of paper. Most of the stamps seem to have been printed on a hard wove paper, varying a little in thickness; the 10d is found on a very thin paper; and the 1/2d is recorded on ribbed paper, though whether this is a true "ribbed" variety or merely the result of some peculiarity in printing is open to discussion. As the ribbed lines are anything but distinct, though the paper showing this peculiarity is a little softer than that generally used, it is more than likely that the ribbing was purely accidental. Owing to the differing qualities of paper used the same idiosyncrasies of measurement in the size of the designs may be noted, especially in the case of the 10d as was referred to in a previous chapter. But as all variations of this character in stamps printed from line-engraved plates were long ago conclusively proved to be due to nothing more exciting than paper shrinkage it is hardly worth while wearying our readers with a resurrection of all that has been written on the subject leading up to the proof. While examples showing the extremes of size are of interest in a specialised collection little can be said in favor of their philatelic value. _Reference List._ 1855-57. Engraved and printed by Rawdon, Wright, Hatch & Edson, New York, on wove paper. Imperforate. 4. 1/2d pink, Scott's No. 8. 5. 7-1/2d green, Scott's No. 9. 6. 10d blue, Scott's No. 7. CHAPTER V.--_The Perforated Pence Stamps._ In the Report of the Postmaster-General for September 30th, 1857, to which we have already made reference, we read:-- Moreover, the Department has been led, by the increasing use of Postage Stamps, to take measures for obtaining the Canadian Postage Stamps in sheets perforated in the dividing lines, in the manner adopted in England, to facilitate the separation of a single stamp from the others on a sheet when required for use. From the above statement, one would naturally infer that such a useful innovation would be adopted at once, especially so when it is considered that the utility and convenience of perforation had already been amply tested and had proved eminently satisfactory in England. Unfortunately, no further mention of perforation is made in the Reports of succeeding years, and this absence of direct official evidence combined with the existence of certain facts has given rise to much theorising as to the actual date of issue of the perforated varieties, and as to whether the perforation was applied by the manufacturers of the stamps, by the Canadian Government, or by private parties in Canada.