"I am rather surprised," said he, "that you chose so composite an object as a mummy to begin on. I should have thought that a simpler object, such as a coffin or a wooden figure, would have been more instructive."

"In some ways it would," replied Thornd.y.k.e, "but the variety of materials that the mummy gives us has its advantages. I hope your father is not ill, Miss Bellingham."

"He is not at all well," said Ruth, "and we agreed that it was better for me to come alone. I knew Herr Lederbogen quite well. He stayed with us for a time when he was in England."

"I trust," said Dr. Norbury, "that I have not troubled you for nothing.

Herr Lederbogen speaks of 'our erratic English friend with the long name that I can never remember,' and it seemed to me that he might be referring to your uncle."

"I should hardly have called my uncle erratic," said Ruth.

"No, no. Certainly not," Dr. Norbury agreed hastily. "However, you shall see the letter presently and judge for yourself. We mustn't introduce irrelevant topics while the experiment is in progress, must we, Doctor?"

"You had better wait until we have finished," said Thornd.y.k.e, "because I am going to turn out the light. Switch off the current, Polton."

The green light vanished from the bulb, the hum of the interrupter swept down an octave or two and died away. Then Thornd.y.k.e and Dr. Norbury rose from their chairs and went towards the mummy, which they lifted tenderly while Polton drew from beneath it what presently turned out to be a huge black-paper envelope. The single glow-lamp was switched off, leaving the room in total darkness, until there burst out suddenly a bright orange-red light immediately above one of the trays.

We all gathered round to watch, as Polton--the high-priest of these mysteries--drew from the black envelope a colossal sheet of bromide paper, laid it carefully in the tray and proceeded to wet it with a large brush which he had dipped in a pail of water.

"I thought you always used plates for this kind of work," said Dr.

Norbury.

"We do, by preference; but a six-foot plate would be impossible, so I had a special paper made to the size."

There is something singularly fascinating in the appearance of a developing photograph; in the gradual, mysterious emergence of the picture from the blank, white surface of plate or paper. But a skiagraph, or X-ray photograph, has a fascination all its own. Unlike an ordinary photograph, which yields a picture of things already seen, it gives a presentment of objects. .h.i.therto invisible; and hence, when Polton poured the developer on the already wet paper, we all craned over the tray with the keenest curiosity.

The developer was evidently a very slow one. For fully half a minute no change could be seen in the uniform surface. Then, gradually, almost insensibly, the marginal portion began to darken, leaving the outline of the mummy in pale relief. The change, once started, proceeded apace.

Darker and darker grew the margin of the paper until from slaty grey it had turned to black; and still the shape of the mummy, now in strong relief, remained an elongated patch of bald white. But not for long.

Presently the white shape began to be tinged with grey, and, as the colour deepened, there grew out of it a paler form that seemed to steal out of the enshrouding grey like an apparition, spectral, awesome, mysterious. The skeleton was coming into view.

"It is rather uncanny," said Dr. Norbury. "I feel as if I were a.s.sisting at some unholy rite. Just look at it now!"

The grey shadow of the cartonnage, the wrappings and the flesh was fading away into the black background and the white skeleton stood out in sharp contrast. And it certainly was a rather weird spectacle.

"You'll lose the bones if you develop much farther," said Dr. Norbury.

"I must let the bones darken," Thornd.y.k.e replied, "in case there are any metallic objects. I have three more papers in the envelope."

The white shape of the skeleton now began to grey over and, as Dr.

Norbury had said, its distinctness became less and yet less. Thornd.y.k.e leaned over the tray with his eyes fixed on a point in the middle of the breast and we all watched him in silence. Suddenly he rose. "Now, Polton," he said sharply; "get the hypo on as quickly as you can."

Polton, who had been waiting with his hand on the stop-c.o.c.k of the drain-tube, rapidly ran off the developer into the bucket and flooded the paper with the fixing solution.

"Now we can look at it at our leisure," said Thornd.y.k.e. After waiting a few seconds, he switched on one of the glow-lamps, and as the flood of light fell on the photograph, he added: "You see we haven't quite lost the skeleton."

"No." Dr. Norbury put on a pair of spectacles and bent down over the tray; and at this moment I felt Ruth's hand touch my arm, lightly, at first, and then with a strong, nervous grasp; and I could feel that her hand was trembling. I looked round at her anxiously and saw that she had turned deathly pale.

"Would you rather go out into the gallery?" I asked; for the room with its tightly shut windows was close and hot.

"No," she replied quietly, "I will stay here. I am quite well." But still she kept hold of my arm.

Thornd.y.k.e glanced at her keenly and then looked away as Dr. Norbury turned to him to ask a question.

"Why is it, think you, that some of the teeth show so much whiter than others?"

"I think the whiteness of the shadows is due to the presence of metal,"

Thornd.y.k.e replied.

"Do you mean that the teeth have metal fillings?" asked Dr. Norbury.

"Yes."

"Really! This is very interesting. The use of gold stoppings--and artificial teeth, too--by the ancient Egyptians is well known, but we have no examples in the Museum. This mummy ought to be unrolled. Do you think all those teeth are filled with the same metal? They are not equally white."

"No," replied Thornd.y.k.e. "Those teeth that are perfectly white are undoubtedly filled with gold, but that greyish one is probably filled with tin."

"Very interesting," said Dr. Norbury. "_Very_ interesting! And what do you make of that faint mark across the chest, near the top of the sternum?"

It was Ruth who answered his question.

"It is the Eye of Osiris!" she exclaimed, in a hushed voice.

"Dear me!" exclaimed Dr. Norbury, "so it is. You are quite right. It is the Utchat--the Eye of Horus--or Osiris, if you prefer to call it so.

That, I presume, will be a gilded device on some of the wrappings."

"No: I should say it is a tattoo mark. It is too indefinite for a gilded device. And I should say further that the tattooing is done in vermilion, as carbon tattooing would cast no visible shadow."

"I think you must be mistaken about that," said Dr. Norbury, "but we shall see, if the Director allows us to unroll the mummy. By the way, those little objects in front of the knees are metallic, I suppose?"

"Yes, they are metallic. But they are not in front of the knees; they are _in_ the knees. They are pieces of silver wire which have been used to repair fractured knee-caps."

"Are you sure of that?" exclaimed Dr. Norbury, peering at the little white marks with ecstasy; "because, if you are, and if these objects are what you say they are, the mummy of Sebek-hotep is an absolutely unique specimen."

"I am quite certain of it," said Thornd.y.k.e.

"Then," said Dr. Norbury, "we have made a discovery, thanks to your inquiring spirit. Poor John Bellingham! He little knew what a treasure he was giving us! How I wish he could have known! How I wish he could have been here with us to-night!"

He paused once more to gaze in rapture at the photograph. And then Thornd.y.k.e, in his quiet, impa.s.sive way, said:

"John Bellingham is here, Doctor Norbury. This is John Bellingham."

Dr. Norbury started back and stared at Thornd.y.k.e in speechless amazement.

"You don't mean," he exclaimed, after a long pause, "that this mummy is the body of John Bellingham!"

"I do, indeed. There is no doubt of it."

"But it is impossible! The mummy was here in the gallery a full three weeks before he disappeared."

"Not so," said Thornd.y.k.e. "John Bellingham was last seen alive by you and Mr. Jellicoe on the fourteenth of October, more than three weeks before the mummy left Queen Square. After that date he was never seen alive or dead by any person who knew him and could identify him."