Read this strip at gocomics.com.
We're here on the ground floor of another emerging Peanuts story theme, Lucy's willful ignorance. She's come a long way from her doll-like, third-person-referring, self-pitying ("Poor Lucy") early personality. Her mistaken knowledge of the universe, and her spreading that knowledge to Linus, is an upcoming cause of Charlie Brown's stomachaches.
The way the path behind Charlie Brown, in the first panel, curves up only to disappear is strange when you notice it. I think it's being represented as disappearing over a hill and Schulz didn't draw the horizon. My guess is, drawing the horizon line would connect the two characters visually, subconsciously connecting them when the whole theme of the strip is disconnection.
Lucy's pose in the second panel is great. She puts a lot of energy into her mockery.
Ho ho ho!
