when the thing came.

The wind had died away to a light breeze, and I was working at the main
rigging, along with Plummer, putting on seizings.

"Looks as if 'twere middlin' 'ot," he remarked.

"Yes," I said; and, for the time, took no further notice.

Presently he spoke again:

"It's gettin' quite 'azy!" and his tone showed he was surprised.

I glanced up, quickly. At first, I could see nothing. Then, I saw what
he meant. The air had a wavy, strange, unnatural appearance; something
like the heated air over the top of an engine's funnel, that you can
often see when no smoke is coming out.

"Must be the heat," I said. "Though I don't remember ever seeing
anything just like it before."

"Nor me," Plummer agreed.

It could not have been a minute later when I looked up again, and was
astonished to find that the whole ship was surrounded by a thinnish haze
that quite hid the horizon.

"By Jove! Plummer," I said. "How queer!"

"Yes," he said, looking round. "I never seen anythin' like it before--
not in these parts."

"Heat wouldn't do that!" I said.

"N--no," he said, doubtfully.

We went on with our work again--occasionally exchanging an odd word or
two. Presently, after a little time of silence, I bent forward and asked
him to pass me up the spike. He stooped and picked it up from the deck,
where it had tumbled. As he held it out to me, I saw the stolid
expression on his face, change suddenly to a look of complete surprise.
He opened his mouth.

"By gum!" he said. "It's gone."

I turned quickly, and looked. And so it had--the whole sea showing clear
and bright, right away to the horizon.

I stared at Plummer, and he stared at me.

"Well, I'm blowed!" he exclaimed.

I do not think I made any reply; for I had a sudden, queer feeling that
the thing was not right. And then, in a minute, I called myself an ass;
but I could not really shake off the feeling. I had another good look at
the sea. I had a vague idea that something was different. The sea looked
brighter, somehow, and the air clearer, I thought, and I missed
something; but not much, you know. And it was not until a couple of days
later, that I knew that it was several vessels on the horizon, which had
been quite in sight before the mist, and now were gone.

During the rest of the watch, and indeed all day, there was no further
sign of anything unusual. Only, when the evening came (in the second
dog-watch it was) I saw the mist rise faintly--t