The teacher urged the students to do a manual check, because some errors aren't picked up by the spell checker.

One who has been sheriff may acknowledge a deed executed by him while in office.

After having cloy'd his puny stomach, he sneaks away privily, in a Stage-Coach, to his house in the Country; there he murders the Vertuous Womb of his Dear Lady, and darts into the Royal Arch, his contagious, loathsome Sperm, which is innocently receiv'd, and hugg'd in the crown'd Act of Conception.

The pheneticist and evolutionist classify species and genera in this manner. Not so the cladist, who deals with the unknown quantities produced by phylo-genetic splits.