19. A fox, 90 rods due south of a greyhound, is pursued by the hound at the rate of 5 rods to 4 of the fox, the fox running a due east course. How far will the hound run to overtake the fox?
20. What kind of morals are most easily put on and off?
21.
My first is a female,
My second the same,
My whole is much dreaded—
Pray what is its name?
22. I am composed of four syllables, and am very popular just now; my first and second form a Latin verb; my third is a species of animal; my first, second, and third form a kind of rule; my fourth, reversed, is thin and narrow; and my third and fourth, without my final, is intellectual.
23. Why are unprotected hearth-fires like insolent beggars?