Writing to Mr. F. C. Young concerning the 12d. stamp, Mr. John N. Luff says:[20]--"It is my opinion that both the wove and laid papers are quite genuine and I think it is possible that both varieties might occur though there was only one lot sent out by the printers. It does not, of course, follow that the entire batch was printed on the same day or that two varieties of paper might not have been used. The early printers were not always very particular about their paper, provided it was somewhat alike in a general way. Some collectors claim that laid paper is often of such nature that the lines do not show in some parts of the sheet, and I believe there is evidence to support this theory." Finally Mr. Charles Lathrop Pack, in some notes sent the _London Philatelist_, sums matters up in these words:[21]--"After a very careful investigation I believe that the 12d., on wove paper, was issued, and that the stamp was on sale at the Post Office, in Hamilton, Canada West." Mr. Pack writes us further:--"When I was a boy I went to school at St. Catherines, Ontario. There were keen stamp collectors in St. Catherines at that time, not only among boys, but among grown people. That was about 1869 or 1870. I was told that part of the 12d. Canada which had been on sale at the Hamilton post office were on wove paper and I was convinced that that was the case." [20] Canada Stamp Sheet, IV: 142. [21] London Philatelist, XVI: 144. Concerning the laid and wove papers of this issue Mr. King writes as follows:[22]--"The texture of these papers is virtually the same, and it is indeed often difficult, particularly in the case of the 6d., to distinguish between the _laid_ and _wove_ papers. The lines in the _laid_ paper are of a most peculiar character, and cannot, as a rule, be brought fairly out by holding the stamp between one's eyes and the light. The best way to test these two papers is to lay the stamps, face down, on a black surface, and let the light strike them at about an angle of fifteen degrees, when the _laid_ lines are brought most plainly into view. It is necessary, however, to place the specimens so that the light will strike them parallel to their length, as the _laid_ lines run horizontally in the 3d., and vertically in the 6d. and 12d." [22] Monthly Journal, VII: 9.