In Canto I Odysseus I guess sacrifices a sterile bull. At first sight I asked why anybody would bother to call a steer a "sterile bull". But no, I don't think Pound meant steer, I think he meant what he said. When you think about it, there must be such creatures. They're not steers so they compete for the heifers, yet wouldn't benefit cattlemen. So, is the sacrifice Gresham's law at work, where we tend to pass on the inferior and keep the better for ourselves. "Here, God, you'll just love this bull, he's very rare." Were sterile bulls actually sacrificed in ancient Greek days, or is this one of Pound's insights?