It's absolutely unbusinesslike and unpractical.
Simply a letter, asking them, as old friends, to do this thing.

Whether they will or not the Almighty only knows." "Well, Daniel, I must say I shouldn't have thought you, as his lawyer, would have let him do such a thing.

Of course, I don't know either of them very well, but, from what little I've heard, I should say they know as much about what they would be supposed to do as--as you do about tying a necktie.

For mercy sakes let me fix it! The knot is supposed to be under your chin, not under your ear as if you were going to be hung." The Judge meekly elevated the chin and his wife pulled the tie into place.
"And so," she said, "they can say yes or no just as they like." "Yes, it rests entirely with them." "And suppose they say no, what will become of the child then ?" "I can't tell you.

Captain Hall seemed pretty certain they wouldn't say no." "Humph! There! Now you look a little more presentable.