Adscript (from Lat. ad, on or to, and scribere, to write) means something written after, as opposed to subscript which means written under.
A laborer was called an "adscript of the soil" (adscriptus glebae) when he could be sold or transferred with it, as in feudal days, and as in Russia until 1861. Carlyle speaks of the Java blacks as a kind of adscript.