If this is examined with a glass on the face of the stamp, there appear to be rows of slightly raised squares, separated by depressed straight lines, with a still more raised cross, formed by diagonal lines running from corner to corner of the square. If the back is examined, the straight lines appear raised, the crosses depressed. In all specimens examined, the embossing is very flat. The second variety does not cover the entire stamp, but shows a rectangle, measuring 13 by 16 mm., composed of 16 rows of 20 small squares each. It was adopted August 8th, 1867, and was applied only to the; 3 cents, rose, perforated 12, large grille. Copies with this grille may be found in which one side row or the other shows only half squares instead of whole ones, also with some of the top or bottom rows missing, wholly or partly. _Var._ 12½ by 16 mm., 15½ by 20 rows, 3c., perf. 12. 12¼ " 15 " 15 by 18½ " 3c " The appearance of this grille, examined on the face, is just the reverse of the preceding, as the straight lines are raised and the crosses depressed. The third variety was a still smaller rectangle, about 11 by 14 mm., composed of 14 rows of 17 small squares or parts of squares. The date is January 8th, 1868. Numerous variations may be found. It was applied only to the; 1 cent, blue, perforated 12, medium grille. 2 " black " 12 " 3 " rose " 12 " 10 " green " 12 " 12 " black " 12 " 15 " black " 12 " _Var._ 11½ by 14½ mm., 15 by 18 rows, 3c, rose, perf. 12. 11 by 14 mm., 14 by 17½ " 3c " " 14 by 17 " 3c " " 14 by 16½ " 1c blue " 14 by 16½ " 3c rose " 14 by 16½ " 10c green " 14 by 16½ " 12c black " 14 by 16½ " 2c " " 14 by 16½ " 3c rose " 11 by 13 mm., 14 by 16½ " 3c " " 14 by 16 " 3c " " 10½ by 14 mm., 14 by 16½ " 3c " " 13 by 16½ " 3c " " 13 by 16½ " 10c green " _Oddity._ With 2 grilles touching on the same stamp. 3 cents, rose, perforated 12. _Note._ It is not uncommon to find parts of two grilles on the same stamp at a distance from each other, part of a grille being at the top and part at the bottom, or part of a grille on each side. The oddity noted presents two grilles touching by the top and bottom, one a little farther to the left than the other, making a strip of squares from the top to the bottom of the stamp.