to yield no new conditions.

But the whole speech is in confusion, and I suspect something left out. I should read,

What he would do,

He sent in writing after; what he would not,

Bound with an oath. To yield to his conditions.

Here is, I think, a chasm. The speaker's purpose seems to be this: To yield to his conditions is ruin, and better cannot be obtained, so that all hope is vain.

V.ii.10 (424,7) it is lots to blanks] A lot here is a prize.

V.ii.17 (424,8)

For I have ever verify'd my friends,

(Of whom he's chief) with all the size that verity