me."

I took one of the sheets and yanked it, and almost cut my fingers. I
bent over and put my hands on my knees to get better leverage just as I
had the very first time, but the sheet would not tear. I threw it on the
desk and tried another with the same results. One after another I ran
through them all while Mr. Spardleton sat back and watched me. I was
wild-eyed when I finished.

Mr. Spardleton said, "Mr. Saddle, would you mind telling me what has
happened?"

I pulled up a chair, groped for my voice, and finally got the story out.
He looked at me strangely, tried to tear another of those miserable
little sheets, and said, "Mr. Saddle, do you feel all right?"

In Boston I had been completely deflated and bewildered, but now I was
mad. I grabbed up the phone and called Callahan. I had barely started to
pour out the story when he said, "I'm glad you called, Carl. We seem to
have run into something on this paper thing. Looks bad. Can you come
out?"

"Be right there." I hung up.

Mr. Spardleton went out with me; he didn't want me to go anywhere alone.
Callahan was holding two sheets up to the light when we went into his
lab. He said, "Two identical sheets, except for the moisture content.
Moisture is the devil. One of these is dry, the other contains three per
cent moisture. Here's the dry one." He tore it in half effortlessly.
"Here's the moist one." And he strained at it, but it would not tear.
"We just ran across this effect last night, and finished checking it out
an hour ago. Have you been to Rude Associates yet?"

I nodded.

"Too bad. We'll have to show them what can happen."

Mr. Spardleton said, "They already know."

Callahan said, "This kicks the whole thing in the head. The paper can
never be more than a laboratory curiosity, as far as we can see. The
sun, a dry climate, heat, any of these things will drive off the
moisture, and the paper will lose its strength. There's no way we can
market a product like that when it might lose its strength at any time.
I'm afraid the 'Tearproof Paper' must join the huge list of fine
products that can't be sold because of one small flaw."

It was Mr. Spardleton who steered me out of the labs. He slipped an arm
through mine and said, "You can refile the patent application and add
this information about the moisture content. You ought to get the patent
without too much trouble even if the product is of no commercial value."

I nodded as we stood in the rain waiti