I stuffed some emergency medicine in my bag and rode my bike over to the school as fast as I could. The police had been contacted and two policemen were already there. We knew we had to get the unconscious kids back to town and would need all the help we could get. Most of the young men were away at war, though, so we set off with the best we had-myself, the two policemen, an elderly male teacher, the assistant principal and principal, the school janitor. And of course the homeroom teacher who'd been with the kids. We grabbed whatever bicycles we could find, but there weren't enough, so some of us rode two to a bike.

– What time did you arrive at the site?

It was 11:55. I remember since I happened to glance at my watch when we got there. We rode our bicycles to the bottom of the hill, as far as we could go, then climbed the rest of the way on foot.

By the time I arrived several children had partially regained consciousness. Three or four of them, as I recall. But they weren't fully conscious-sort of dizzily on all fours. The rest of the children were still collapsed. After a while some of the others began to come around, their bodies undulating like so many big worms. It was a very strange sight. The children had collapsed in an odd, flat, open space in the woods where it looked like all the trees had been neatly removed, with autumn sunlight shining down brightly. And here you had, in this spot or at the edges of it, sixteen elementary-school kids scattered about prostrate on the ground, some of them starting to move, some of them completely still. The whole thing reminded me of some weird avant-garde play.

For a moment I forgot that I was supposed to treat the kids and just stood there, frozen, staring at the scene. Not just myself-everyone in the rescue group reacted the same, paralyzed for a while by what they saw. This might be a strange way of putting it, perhaps, but it was like some mistake had occurred that allowed us to see a sight people should never see. It was wartime, and I was always mentally prepared, as a physician, to deal with whatever came, in the remote possibility that something awful would occur way out here in the country. Prepared as a citizen of Japan to calmly do my duty if the need arose. But when I saw this scene in the woods I literally froze.

I soon snapped out of it, and picked up one of the children, a little girl. Her body had no strength in it at all and was limp as a rag doll. Her breathing was steady but she was still unconscious. Her eyes, though, were open, tracking something back and forth. I pulled a small flashlight out of my bag and shined it on her pupils. Completely unreactive. Her eyes were functioning, watching something, yet showed no response to light. I picked up several other children and examined them and they were all exactly the same, unresponsive. I found this quite odd.

I next checked their pulse and temperature. Their pulses were between 50 and 55, and all of them had temperatures just below 97 degrees. Somewhere around 96 degrees or thereabouts, as I recall. That's correct-for children of that age this pulse rate is well below normal, the body temperature over one degree below average. I smelled their breath, but there was nothing out of the ordinary. Likewise with their throats and tongues.

I immediately ascertained these weren't the symptoms of food poisoning. Nobody had vomited or suffered diarrhea, and none of them seemed to be in any pain. If the children had eaten something bad you could expect-with this much time having elapsed-the onset of at least one of these symptoms. I heaved a sigh of relief that it wasn't food poisoning. But then I was stumped, since I hadn't a clue what was wrong with them.

The symptoms were similar to sunstroke. Kids often collapse from this in the summer. It's like it's contagious-once one of them collapses their friends all do the same, one after the other. But this was November, in a cool woods, no less. One or two getting sunstroke is one thing, but sixteen children simultaneously coming down with it was out of the question.

My next thought was some kind of poison gas or nerve gas, either naturally occurring or man-made. But how in the world could gas appear in the middle of the woods in such a remote part of the country? I couldn't account for it. Poison gas, though, would logically explain what I saw that day. Everyone breathed it in, went unconscious, and collapsed on the spot. The homeroom teacher didn't collapse because the concentration of gas wasn't strong enough to affect an adult.

But when it came to treating the children, I was totally lost. I'm just a simple country doctor and have no special expertise in poison gasses, so I was out of my league. We were out in this remote town and I couldn't very well ring up a specialist. Very gradually, in fact, some of the children were getting better, and I figured that perhaps with time they would all regain consciousness. I know it's an overly optimistic view, but at the time I couldn't think of anything else to do. So I suggested that we just let them lie there quietly for a while and see what developed.

– Was there anything unusual in the air?

I was concerned about that myself, so I took several deep breaths to see if I could detect any unusual odor. But it was just the ordinary smell of a woods in the hills. It was a bracing scent, the fragrance of trees. Nothing unusual about the plants and flowers around there, either. Nothing had changed shape or been discolored.

One by one I examined the mushrooms the children had been picking. There weren't all that many, which led me to conclude that they'd collapsed not long after they began picking them. All of them were typical edible mushrooms. I've been a doctor here for some time and am quite familiar with the different varieties. Of course to be on the safe side I collected them all and took them back and had a specialist examine them. But as far as I could tell, they were all ordinary, edible mushrooms.

– You said the unconscious children's eyes moved back and forth, but did you notice any other unusual symptoms or reactions? For instance, the size of their pupils, the color of the whites of their eyes, the frequency of their blinking?

No. Other than their eyes moving back and forth like a searchlight, there was nothing out of the ordinary. All other functions were completely normal. The children were looking at something. To put a finer point on it, the children weren't looking at what we could see, but something we couldn't. It was more like they were observing something rather than just looking at it. They were essentially expressionless, but overall they seemed calm, not afraid or in any pain. That's also one of the reasons I decided to just let them lie there and see how things played out. I decided if they're not in any pain, then just let them be for a while.

– Did anyone mention the idea that the children had been gassed?

Yes, they did. But like me they couldn't figure out how it was possible. I mean, no one had ever heard of somebody going on a hike in the woods and ending up getting gassed. Then one of the people there-the assistant principal, I believe it was-said it might have been gas dropped by the Americans. They must have dropped a bomb with poison gas, he said. The homeroom teacher recalled seeing what looked like a B- 29 in the sky just before they started up the hill, flying right overhead. That's it! everyone said, some new poison gas bomb the Americans developed. Rumors about the Americans developing a new kind of bomb had even reached our neck of the woods. But why would the Americans drop their newest weapon in such an out-of-the-way place? That we couldn't explain. But mistakes are part of life, and some things we aren't meant to understand, I suppose.

– After this, then, the children gradually recovered on their own?

They did. I can't tell you how relieved I was. At first they started squirming around, then they sat up unsteadily, gradually regaining consciousness. No one complained of any pain during this process. It was all very quiet, like they were waking up from a deep sleep. And as they regained consciousness their eye movements became normal again. They showed normal reactions to light when I shined a flashlight in their eyes. It took some time, though, for them to be able to speak again-just like you are when you first wake up.