So, after all, when you are learning hard words about insects you are learning a great deal besides, as you will find. [Illustration] PRETTY KATYDIDS [Illustration] Katy did! Katy didn't! Katy did! Well, well, did she or didn't she, and what of it anyway. Come here, Katy did and Katy didn't, the children want to see you. She's a pretty little Did and Didn't, isn't she. Katy, why do you not know your own mind and always tell the same story? Krick--krick--krick, there, she is talking; that's her way of saying "Katy did." Krick--krick--krickkrick. Now she has said "Katy didn't." Well, we never shall know anything more about it. No, little Nell, she doesn't really say Katy did or Katy didn't, but it sounds like that, and we make believe she says it. John says he is sure the katydids are first cousins to the grasshoppers and locusts, and so they are. They are very closely related to--which division of locusts, do you think? Oh, yes, the longhorned, of course. See their long, long antennae, and the male has the same little musical places on his wings, little membranes that vibrate and make his song of Katy did and Katy didn't. [Illustration] No, the little lady katydid cannot sing--only the little male, and he keeps it up all night long. We sometimes wish he would get tired or sleepy and stop, but he never does. Why do you suppose he likes to sing so well in the night? The katydids generally live on trees and bushes. Yes, they are a beautiful, pale green people, and that is one reason we do not often see them. It is not easy to find a katydid among the green leaves. The female katydids have a long sword-shaped ovipositor with which they roughen the bark on twigs, and place the eggs there, fastening them with a gummy substance. The egg is glued fast so it will not fall off. It hatches into a little dot of a katydid that has no wings, but, like the larvae of the other insects we know about, it eats and grows and moults, and at last its wings and the rest of its body are full grown. It casts its skin for the last time; it is no longer a larva, but a full-grown insect. Yes, May, we call the young of all insects larvae. [Illustration] See this dainty katydid that Charlie has caught for us. How pretty it is! Its feelers are like long green threads. And how sensitive they are! It quickly starts away when we touch one of the feelers. Yes, Mollie, the katydid walks more than the grasshopper. It can jump well with those long, slender hind legs. How beautiful its hind legs are! They are longer and more delicate than those of the grasshopper. And its wings, how gauzy and dainty! Its wing covers are not so stiff as those of the grasshopper. They look almost like flying wings, they are so delicate. See, they open, and fasten themselves open, like the wing covers of the grasshopper; and when they are at rest they overlap like the wings of the grasshopper. The inner wings are like fine lace.