Mister Rogers' Neighborhood - Season 2 Episode 6 -

Rogers establishes a pattern when he enters the television house. He wears a lab coat, rather than a sweater, for a true scientific endeavor. On this program, he compares a turtle, a conch shell, an armadillo, and a suit of armor. In the Neighborhood of Make-Believe a different scientist, Bud Alder, shows the difference between oil-based and water-based paints. He shares his wisdom with X the Owl, who offers to teach Lady Elaine the names of birds.