 Those delicate, sickly birds that Emlyn told me about, with their tendency to die, they're now fat and thriving. Predictably, farmers couldn't get enough of it. Antibiotic use in agriculture goes from zero in 1948, because no one had thought of this, to something like 500,000 pounds a year by the middle of the 1950s. Wow. So this takes off in a huge way. Enormous.