"Yes," exulted Arethusa, "I know some Poetry!"
"Conversation," continued the quaint little pamphlet of advice, "is best carried on if some definite topic is introduced. This, however, must he accomplished with ease and grace, lest a feeling of awkwardness be aroused."
Arethusa descended to the library and hunted up a dictionary, to look for "topic."
"The subject of any distinct portion of a discourse; a theme or subject as of talk or thought."
This was fairly clear. "I might find a Topic," she thought, for she surely could not quote poetry all through the evening. "I might read about something I could talk about."
Her eyes roved restlessly down the same row of the bookcase where she had got the dictionary. It was nearly all Encyclopedia, stretching away in a formidable array of volumes exactly alike, except for the tiny gold lettering across the center of the back. She lifted out one at random, the "L's," and it opened accommodatingly of its own accord, when its heaviness slid out of her grasp, to "Lepidoptera." Which was a strange and almost unpronounceable word; but the pictures which accompanied this text were somewhat explanatory of its meaning, being all of familiar looking butterflies and moths.
Arethusa grew interested. She spread herself comfortably out on the floor, there in the corner, and began to read; and she gleaned as she read several facts that might "with profit" be introduced into a conversation.
For instance; she learned that there were over fifty different families of these Lepidoptera, and that all of these family divisions were divided also, so many times that they have never all been counted or classified; that all common moths and butterflies belonged under this big head, as well as some "cousins," so aristocratic and so wonderful in their colorings that Arethusa exclaimed aloud over their beauty in the large plate on the page just opposite; and that every single, solitary member of every family, whether of high or low degree, came from some sort of caterpillar. She discovered that these Lepidoptera had traits of character which still further differentiated them. They were exceedingly finicky about their food, she read; the meat of one variety seemed to be the deadly poison of another. And some of them could live under the water; some drowned in a drop of rain.