To a man whose mind is free there is something even more intolerable in the sufferings of animals than in the sufferings of man. For with the latter it is at least admitted that suffering is evil and that the man who causes it is a criminal. But thousands of animals are uselessly butchered every day without a shadow of remorse.
A metrical foot of three syllables, one long (or stressed) followed by two short (or unstressed), as in happily. The dactyl is the reverse of the anapest.