I suspect it arose from the help I've been giving the grade teachers in their nature work.

They are trying to teach the children something, and half the instructors don't know a blue jay from a king-fisher, a beech leaf from an elm, or a wasp from a hornet." "Well, do you ?" anxiously inquired Mrs.Comstock.
"Indeed, I do!" laughed Elnora, "and several other things beside.

When Freckles bequeathed me the swamp, he gave me a bigger inheritance than he knew.

While you have thought I was wandering aimlessly, I have been following a definite plan, studying hard, and storing up the stuff that will earn these seven hundred and fifty dollars.

Mother dear, I am going to accept this, of course.