Read it through once

“No! What a shame of your mother, never to waken your filial regard for me! You are my son, then, I’ll tell you; and your mother was a wicked slut to leave you in ignorance of the sort of father you possessed. Now, don’t wince, and colour up! Though it _is_ something to see you have not white blood. Be a good lad; and I’ll do for you. Nelly, if you be tired you may sit down; if not, get home again. I guess you’ll report what you hear and see to the cipher at the Grange; and this thing won’t be settled while you linger about it.”