Both Uses of

accord
in
The Ransom of Red Chief

In the other he had the sharp case-knife we used for slicing bacon; and he was industriously and realistically trying to take Bill's scalp, according to the sentence that had been pronounced upon him the evening before.†
*

according to = as stated by; or in agreement with

Just at the moment when I should have been abstracting the fifteen hundred dollars from the box under the tree, according to the original proposition, Bill was counting out two hundred and fifty dollars into Dorset's hand.†

Definitions:

(1) (accord as in: according to, or in accord with)
in keeping with; or in agreement/harmony/unity with
This meaning of accord is often seen in the form according to or accordingly where it can take on more specific meanings. For example:
- "According to Kim, ..." -- as stated by
- "To each according to her ability." -- based upon
- "Points are scored according to how well they perform." -- depending upon
- "The dose is calculated according to body weight." -- in proportion to
- "We got a flat tire. Accordingly, I pulled to the side of the road." -- because of what was just said; or as a result
(2) (accord as in: reached an accord)
an agreement

In this sense, accord can refer to a formal agreement (such as one written between two countries) or an informal agreement (such as an unvoiced consensus about what should be done).
(3) (accord as in: done of her own accord)
mind

This sense of accord is typically seen in the form own accord or one accord.
(4) (accord as in: accord her the respect deserved)
to give someone special treatment -- especially respect