Jackson Gregory

“ Then, having moved Buck a little deeper into the grove, he turned again toward Johnny’s Luck. Soon or late the madman or the girl would come back to their cabin. While his patience lasted Sheldon would wait there for them.
This time, when he came again into the cabin, where still there was no sign that its owners had been there since he had left it, he closed the back door and flung the front one wide open. For if the madman and the girl came back, Sheldon preferred to have them come this way, so that he could see them in the clearing that had once been a street of Johnny’s Luck. ”

“ Get an alienist and an entomologist together over this thing,” thought Sheldon, “and they could figure to the day when Hamilton went mad!”
For distinctly the more recent notes were in the same hand but not inspired by the same brain as the earlier ones. In the latter there was the cold precision of the scientist; in the others the burning enthusiasm of a madman.
A note in the body of the text awoke in Sheldon this train of thought. Under the heading Papilioninae (The Swallow Tail Butterflies) there was written in lead pencil:
To-day I have discovered IT! ”