in America is enormous. It is said that the sewing machines alone use daily enough thread to reach around the world. These facts will give you an idea of the great industry that has been developed out of the product of a little worm. Next to cotton and wool, silk is the most valuable fiber in the world. -Jesse L. Smith.

HELPS TO STUDY

The following topics set forth the points which Mary discussed with her father:

1. Where people engage in silk culture to-day.

2. How knowledge of the silk industry became known.

3. Annual silk production of the world.

4. Life of a silkworm.

5. How silkworms are propagated.

Match the paragraphs with these topics.

Take "Father's Story" and name each of the paragraphs in much the same way as indicated above.

Other Selections: Seven Little Sisters, ANDREWS; When I Was a Boy in China, LEE; Little People Everywhere, JEFFRIES; The Story of Cotton, Silk, Wool, Flax, BROOKS; Makers of Many Things, TAPPAN.

EUREKA

If you put a piece of iron and a piece of wood into a pail of water, the iron sinks and the wood floats. Why is it?

Early man observed that wood always floated when placed in water; so he made his boats of wood, and the practice was followed for thousands of years. To-day nearly all steamships are made of steel and they float just as easily as the wooden vessels. Why is it?

For a long time this old, old question troubled Donald, as no doubt it has troubled you. But one day in his reading he came across a story about an old Greek scholar named Archimedes who found the answer to the question in a peculiar way. The story goes that a long time ago a king by the name of Hiero ruled over Sicily. Like most of his kind, he was vain and doted much on the splendor of his court. So one day he gave his jeweler an order for a crown of gold, larger and finer than any in the land.

When the crown was delivered to King Hiero, he suspected that his crown of gold had been alloyed by a fraud of his jeweler and that what seemed to be gold was not gold at all.

Thinking thus, King Hiero besought the aid of Archimedes, to ascertain if fraud had been done him.

Archimedes undertook to solve the problem, and hit upon the right solution by accident.

Upon going to his bath one day he found the tub brimming full of water. As he sat down in the tub the water ran out, and he reflected that his body had displaced an equal bulk of water. From this he reasoned that by putting the King's crown in the water, and measuring the bulk of water displaced and then weighing an equal bulk of pure gold, he would be able to tell, when the alloyed crown was weighed, how much it lacked of the proper weight of pure gold.

When the full truth of the plan dawned upon his mind, Archimedes rushed from his bathtub and exclaimed, "Eureka! Eureka!" meaning, "I have found it! I have found it!"

In this way not only was the dishonest jeweler detected and punished, but the world was taught another law of nature, namely, that a floating body displaces its own weight of liquid.

When Donald first read the story of the old Greek scholar, he thought Archimedes must have been mistaken, and he would not be satisfied until he had proved the truth of the statement by an experiment of his own. This is the way he tried it: he found a small pan and also a large can, with a spout on one side, and filled the can until water ran out of the spout.

Then he weighed the pan and found the weight to be four and one-half ounces. Next he weighed a

block of wood, before he put it into the can, and found its weight to be one and one-half ounces. Then he placed the block of wood in the can and caught the overflow of water in the pan. When he weighed the pan, he found that its weight, with the water in it, had increased to six ounces. Hence he concluded that the weight of the overflow (one and one-half ounces) was exactly the weight of the block of wood, and that Archimedes was right.

QUESTIONS

1. What things did Donald need in order to perform his experiment? 2. What did his experiment prove? 3. Why does wood float on water? 4. Why will a pan sink if placed on edge but will float on its bottom like a boat?

A SATURDAY HIKE

Two patrols of girl scouts decided to hike to the woods on Saturday to gather nuts. It was agreed that each patrol should bring lunch baskets and that the cost of the "extras" should be borne equally by all of the members.

In the Red Bird patrol were seven girls, while the Blue Birds numbered eight. The Red Birds provided olives, $.65; chocolate fudge, $1.50; and six pounds of sliced ham, $2.50. The Blue Birds brought a pound of butter, $.55; five dozen buns, $.75; two cakes, $1.60; and two dozen lemons, $.90. What was the expense to each girl?

.

Procedure: 1. Read the story through to see what it is all about. 2. Reread to catch the details to see what facts are given and what ones must be found out. 3. Plan the operation. 4. Perform the work. 5. Check over your work.

ODETTE'S LETTER

A thirteen-year-old girl in France was asked by her teacher to write a theme on the coming of the Americans to help drive out the invaders. This is what she wrote:

It was

It was a little river-almost a brook called the Yser. One could talk from one side to the other without raising one's voice. The birds could fly over it with one sweep of their wings. And on its banks there were millions of men, the one turned toward the other, eye to eye. But the difference which separated them was greater than that between the stars in the sky. It was the difference which separates justice from injustice.

The ocean is so great that the sea gulls do not dare to cross it. During seven days and seven nights the great steamships of America, going at full speed, must drive through the deep waters before the lighthouses of France come into view. from one side to another hearts are touching. -Odette Gastinel.

But

HELPS TO STUDY

1. What do you think of Odette Gastinel's letter? 2. Find some poem which you think expresses the same thought.

Other Selections: Philip's Tree, Book V; Letters to Children from Famous People, COLSON and CLITTENDEN; In Flanders Field, MCRAE; America's Answer, HILLARDS.