The collector of entire envelopes finds in this issue two new shapes, knives 6 and 7, of which the former was supposed to supply the needs of the gentler portion of humanity, and is officially known as "Ladies' Note Size," while knife 7 is styled "Medium Letter" and is for commercial correspondence. These envelopes have "patent lines." With the exception of variety 8, which measures 24-1/2 mm., the vertical dimension of the die is 24 mm. The several varieties may be grouped by observing the position of the back of the bust with relation to the letters "G" and "E" of "POSTAGE." GROUP I.--Back of bust points at "G." (Vars. 1 to 7.) GROUP II.--Back of bust points between "G" and E." (Var. 8.) GROUP III.--Back of bust points almost at "E." (Var. 9.) For the specialist the writer recommends the use of a 10 mm. unit distance measurement to be applied as follows: Measure 10 mm. from the top of the highest ray of the left star towards the top of "P" of "POSTAGE." This measurement assists in the identification of varieties 1 and 3. Another measurement may be taken from the left end of the horizontal cross stroke of "N" of "CENTS" towards the "E" of "THREE," and reveals the different spacings between the latter and "CENTS." BACK OF BUST POINTS AT "G." [Illustration] Variety 1:--"PO" close. "AGE" widely spaced. Note that the distance between "T" and the left star is further in Var. 1 than in Var. 2 or 3. "C" of "CENTS" near "E." Width of "U. S." at top 4-1/2 mm. Variety 2:--An additional period close to the upper end of "S." "O" further from "P." "S" nearer "T" than in Var. 1. "U. S." wider than in Var. 1, measuring 5 mm. across the top. "CE" of "CENTS" wide. Variety 3:--"PO" spaced as in Var. 2, and "U. S." as in Var. 1; but "PO" and "TA" are spaced wider than in Var. 1. [Illustration] Variety 4:--"O" far from "P." "S" of "POSTAGE" almost touches inner frame line. "AGE" near. Variety 5:--"PO" close, but "OS" very wide. "AGE" wide. [Illustration] Variety 6:--"ST" very widely spaced; "OS" wide; "AGE" near. Variety 7:--"A" of "POSTAGE" has no bar; "PO" near; "OS" wide. BACK OF BUST BETWEEN "G" AND "E." [Illustration] Variety 8:--This is the largest die of the series. Its vertical measurement is 24-1/2 mm. "PO" close; "ST" close; "AGE" widely spaced. BACK OF BUST POINTS ALMOST AT "E." Variety 9:--"POSTAGE" short and lettering very close. 10 mm. measured from the top of "P," reaches "E." PROOF SET. It may be of interest to collectors of entire envelopes to mention that a set of envelopes has been catalogued under the supposition that they were regularly issued, but they are now generally believed to be proofs. They are all buff paper and are Var. 8. The following knives and sizes exist:[D]