The Bell Tone

It is no use. It's too late. The earth—I must dig—alone.
To Whom It May Concern:
In order to clear up any misunderstanding or false impressions regarding the amazing case of my beloved friend and co-worker, Professor Howard E. Edwards, I submit herewith, extracts from the professor's notebook, which I found on the desk.
Evans Barclay, B.S. Fellow IRE.
Jan. 25.
Last night, in my dreams, I was a monstrous ant, and had been digging myself a burrow in the soft fresh earth. The dream was intensely real, and when I awoke, I felt as tired as if I had actually been digging. My arms ached, and I was astonished, upon examining my hands, to find them raw.
Dressing hastily, I rushed to the back yard, and there, sure enough, near the fence, was a large hole about two feet deep and three feet long. Hurriedly, I filled it in and returned to the house.
I must rest for a few days, as I feel that the intense excitement caused by my investigations, is preying too heavily upon my mind.
At this time, I feel that I should make a brief summary of my findings in respect to the ants, so that Barclay may go over these notes upon his return from his vacation.
First: The ant colony is the source of a powerful bell-like tone which is radiated continuously on two wave-lengths, .0018 meter, and .00176 meter. This tone acts as a radio-beacon, and directs the ants to the colony, no matter where they may be located. The .0018 meter wave is used by the ants for their clacking conversations, by means of which they communicate with each other and the colony, receiving orders from the directing intelligence, reporting the location of food, and requesting help, when needed.
The wave .00176 meter, is used for sending thought images or pictures which may be sent with the clacking code, or independently. I cannot conceive a more efficient or highly specialized communications system. I must learn their secret, their methods.
Jan. 30.