St. Louis directory :

they are in a dry state; and when the weight of any book or other publication exceeds one pound, the same
progressive rates, before laid down, most be charged.

5th. Newspapers, periodical, magazines or any other printed paper or matter, must be sent without
any covers or wrappers, or in covers or wrappers open at the ends or hides, as that the character of the
matter contained therein may be determined without removing such wrappers.

6th. In case there is on or in any newspaper, periodical or pamphlet, or other printed matter or paper
connected therewith, any manuscript of anv kind, by which information shall be asked, or communi-
cation in writing, or by marks or signs, or the directions herein prescribed are in any other respect not
complied with, the same becomes subject to letter postage; and it is the duty of postmasters to remove the
wrappers or envelopes from all printed matter, not charged with letter postage, for the purpose of ascer-
taining whether there is upon or connected with such printed matter, or in such packages, any paper or
other thing which would authorize or require the charge of a higher rate of postage thereon.