"How many kinds of seeds are there?" asked Davy.
"About as many as plants, Davy."
"I don't mean that. I mean how many principal kinds—like flowers, you know—they are Exogens and Endogens."
"Oh, I see. You mean classes. Well, I suppose we might say two, fleshy and dry. Then we might divide the dry into seeds and nuts, and the fleshy into fruits and vegetables."
Davy and Prue were both thinking.
"I suppose my beans are dry," Davy said at last.
"Yes, of course."
"But we ate them green, and they were not dry then."
"That was before they were ripe. There are a number of things that are fleshy when eaten green, that become pods or hulls when the fruit is really ready to gather. Of course, there are fruits and nuts and vegetables that, like flowers, are hard to put in any class. Take the almond—you would call that a nut, of course."
"I just love almonds," said little Prue.