n address to his signature the notice must be
sent to that address, if he has not, then the notice must be sent as
follows: (a) either to the post office nearest to his place of
residence or to the post office where he is accustomed to receive his
letters, or if he lives in one place and has his place of business in
another, notice may be sent to either place, or if sojourning in
another place, the notice may be sent there. In any event if he
receives the notice within the time specified, it will satisfy the
law.

Of course notice may be waived; sometimes, also, it is quite
impossible to give notice; whenever this happens the law does not
require notice to be given.

Something should be added concerning alterations that are made
occasionally in negotiable instruments. Any alteration which changes
the date, the sum payable either of principal or interest, the time or
place of payment, the number or the relations of the parties, the
medium or currency in which payment is to be made, or which adds a
place of payment where no place of payment is specified, or any other
change or addition which alters the effect of the instrument in any
respect is a material one and ought not to be made. To add the words
"with interest," with or without a fixed rate, is a material
alteration. But the insertion by the payee of the words "interest"
after the making of a note by authority of maker will not vitiate it.
And if a note had the clause, "interest at __ per cent," the insertion
of the legal rate would not be a material alteration since the legal
import would not be changed.

The position of a writing on a note is not important, for the effect
of the contract is to be gathered from the four corners of the paper.
The general rule is, if a memorandum written on an instrument in the
margin or at the foot is made before or at the time of its execution,
it is considered a part thereof, and if it affects the operation of
the terms of the body of the instrument it is a material part. It
follows that words written by a party on the margin of an instrument
after its execution and delivery, constitute an alteration if
intended to affect the terms of the instrument and would have such
effect if they were there when the instrument was executed.

A bill of exchange is an unconditional order in writing addressed by
one person to another, signed by the person giving it, requiring the
person to whom it is addressed to pay on demand or at a fixed