"I know a hawk from a handsaw."
The proper word is hernshaw; but the phrase may, as was not unusual, have undergone a change.
"The first row of the Pons Chanson will show you more."
What 'Pons Chanson' is, no one has divined. Editors therefore read 'pious chanson,' meaning the ballad of Jephtha and his daughter.
"May be the devil and the devil has power."
For the first 'the devil,' 4to 1604 reads a deale; so the reading was probably 'a devil,' which is best.