"Did Frau Braun tell of anything else her brother wrote?" asked her mother.

"He spoke of the bridge of boats across the river, and said she would enjoy watching it open and shut to let the steamers and big rafts pa.s.s through. And he told of the Cologne water that is sold in so many of the shops. It is hard to tell which makes the town most famous, the great cathedral or the Cologne water."

"Father, how was the bridge of boats made?" asked Bertha.

"The boats were moored in a line across the river. Planks were then laid across the tops and fastened upon them. Vessels cannot pa.s.s under a bridge of this kind, so it has to be opened from time to time. They say it is always interesting to see this done."

"Yes, Frau Braun said she would rather see the bridge of boats than anything else in the city. She has already begun to plan how she can save up enough money to make the trip."

"I will go over there to-morrow to see her new necklace," said Bertha. "But what is amber, father?"

"If you should go to the northern part of Germany, Bertha, you would see great numbers of men, women, and children, busy on the sh.o.r.es of the ocean. The work is greatest in the rough days of autumn, when a strong wind is blowing from the northeast.

"Then the men dress themselves as though they were going out into a storm. They arm themselves with nets and plunge into the waves, which are bringing treasure to the sh.o.r.e. It is the beautiful amber we admire so much.

"The women and children are waiting on the sands, and as the men bring in their nets, the contents are given into their hands. They separate the precious lumps of amber from the weeds to which they are clinging."

Their father stopped to fill his pipe, and the children thought he had come to the end of the story.

"But you haven't told us yet what amber is," said Bertha.

"Be patient, my little one, and you shall hear," replied her father, patting her head. "As yet, I have not half told the story. But I will answer your question at once.

"A long time ago, longer than you can imagine, Bertha, forests were growing along the sh.o.r.es of the Baltic Sea. There was a great deal of gum in the trees of these forests. It oozed out of the trees in the same manner as gum from the spruce-tree and resin from the pine.

"Storms arose, and beds of sand and clay drifted over the forests.

They were buried away for thousands of years, it may be. But the motion of the sea washes up pieces of the gum, which is of light weight.

"The gum has become changed while buried in the earth such a long, long time. Wise men use the word 'fossilized' when they speak of what has happened to it. The now beautiful, changed gum is called amber.

"There are different ways of getting it. I told you how it comes drifting in on the waves when the winds are high and the water is rough. But on the pleasant summer days, when the sea is smooth and calm, the men go out a little way from the sh.o.r.e in boats. They float about, looking earnestly over the sides of the boats to the bottom of the sea.

"All at once, they see something. Down go their long hooks through the water. A moment afterward, they begin to tow a tangle of stones and seaweed to the sh.o.r.e. As soon as they land, they begin to sort out the great ma.s.s. Perhaps they will rejoice in finding large pieces of amber in the collection.

"There is still another way of getting amber. I know Hans will be most interested in what I am going to say now. It has more of danger in it, and boys like to hear anything in the way of adventure."

Hans looked up and smiled. His father knew him well. He was a daring lad. He was always longing for the time when he should grow up and be a soldier, and possibly take part in some war.

"Children," their father went on, "you have all heard of divers and of their dangerous work under the sea. Gretchen was telling me the other day about her geography lesson, and of the pearl-divers along the sh.o.r.es of India. I did not tell her then that some men spend their lives diving for amber on the sh.o.r.es of our own country.

"They wear rubber suits and helmets and air-chests of sheet iron."

"How can they see where they are going?" asked Bertha.

"There are gla.s.s openings in their helmets, and they can look through these. They go out in boats. The crew generally consists of six men. Two of them are divers, and four men have charge of the air-pumps. These pumps force fresh air down through tubes fastened to the helmet of each diver. Besides these men there is an overseer who has charge of everything.

"Sometimes the divers stay for hours on the bed of the sea, and work away at the amber tangles."

"But suppose anything happens to the air-tubes and the men fail to get as much air as they need?" said Hans. "Is there any way of letting those in the boat know they are in trouble? And, besides that, how do the others know when it is time to raise the divers with their precious loads?"

"There is a safety-rope reaching from the boat to the men. When they pull this rope it is a sign that they wish to be drawn up. But I have told you as much about amber now as you will be able to remember."

"Are you very tired, father dear?" said Bertha, in her most coaxing tone.

"Why should I be tired? What do you wish to ask me? Come, speak out plainly, little one."

"You tell such lovely fairy-tales, papa, I was just wishing for one.

See! The moon is just rising above the tree-tops. It is the very time for stories of the wonderful beings."

Her father smiled. "It shall be as you wish, Bertha. It is hard to refuse you when you look at me that way. Come, children, let us sit in the doorway. Goodwife, put down your work and join us while I tell the story of Siegfried, the old hero of Germany."

CHAPTER IX.

THE MAGIC SWORD

Far away in the long ago there lived a mighty king with his goodwife and his brave son, Siegfried. Their home was at Xanten, where the river Rhine flows lazily along.

The young prince was carefully taught. But when his education was nearly finished, his father said:

"Siegfried, there is a mighty smith named Mimer. It will be well for you to learn all you can of him in regard to the making of arms."

So Siegfried went to work at the trade of a smith. It was not long before he excelled his teacher. This pleased Mimer, who spent many spare hours with his pupil, telling him stories of the olden times.

After awhile, he took Siegfried into his confidence. He said:

"There is a powerful knight in Burgundy who has challenged every smith of my country to make a weapon strong enough to pierce his coat of mail.

"I long to try," Mimer went on, "but I am now old and have not strength enough to use the heavy hammer."

At these words Siegfried jumped up in great excitement.

"I will make the sword, dear master," he cried. "Be of good cheer.

It shall be strong enough to cut the knight's armour in two."

Early the next morning, Siegfried began his work. For seven days and seven nights the constant ringing of his hammer could be heard. At the end of that time Siegfried came to his master with a sword of the finest steel in his right hand.

Mimer looked it all over. He then held it in a stream of running water in which he had thrown a fine thread. The water carried the thread against the edge of the sword, where it was cut in two.

"It is without a fault," cried Mimer with delight.

"I can do better than that," answered Siegfried, and he took the sword and broke it into pieces.

Again he set to work. For seven more days and seven more nights he was busy at his forge. At the end of that time he brought a polished sword to his master.

Mimer looked it over with the greatest care and made ready to test it.