Tranquil, sixty feet under water and your life hanging on a gauge that needs a good heavy wallop to make it work.

When we dropped through the hatch into the interior of the submarine and the cover was clamped down over our heads the commander at once ordered me back into the turret.

IV—"WE RAN SUBMERGED THROUGH A MINE FIELD"

"Hurry, if you want to see her dive," he said.

I climbed into the after section of the turret and fastened my eye to the periscope. Around the top of the turret was a circle of bulls' eyes and I was conscious of the water dashing against them while the spray washed over the glass of the periscope. The little vessel rolled very slightly on the surface, though there was quite a bit of sea running. I watched the horizon through the periscope and watched for the dive, expecting a distinct sensation, but the first thing I noticed was that even the slight roll had ceased and I was surprised to see that the bulls' eyes were completely under water. The next thing there was no more horizon. The periscope also was covered and we were completely beneath the surface.

"Did it make you sick?" the commander asked, when I climbed down from the turret, and when I told him no he was surprised, for he said most men were made sick by their first dive.

The thing most astonishing to me about that experience was how a submerged submarine can thread its way through a mine field. For though the water is luminous and translucent one can hardly make out the black hull of the boat under the turret and a mine would have to be on top of you before you could see it. The men who watch for mines must have a sense for them as well as particularly powerful sight.

We continued to dive until we were sixty-eight feet below the surface, too deep to strike any mine, and there we ran tranquilly on our electric engines, while the commander navigated the vessel and the second in command opened champagne in the two by four mess room. After half an hour of under-water work we came near enough the surface for our fighting periscope to stick twenty inches out of the water and searched the lonely horizon for a ship to attack.

It was not long before we sighted a mine trawler, steaming for the harbor, and speeded up to overtake her.

"Pikers!" said our commander, as we circled twice around the mine trawler; "they can't find us."