The wave was up to their waists. 
They ran faster and got to the top of the bank. 
Then the wave was fifteen feet high. 
It made a big noise as it ran down the ravine. 
Soon it would have caught them and carried them over the Falls. 
It did carry away the baby’s basket and his clothes, and Captain Clark’s
compass. 
The next day a soldier found the compass in the mud.

a live   be stride   min er als   be gin ning
ra pid   nar row   source   Co lum bia

AT THE SOURCE OF THE MISSOURI.

When the canoes were ready, the party started up the river above the
Falls. 
As they reached the mountains, the river grew narrow. 
It was not deep, but it was rapid. 
The soldiers had to pull the canoes with ropes. 
The river did not run straight. 
One day the men dragged the canoes twelve miles. 
Then they were only four miles from where they had started. 
They had to walk in the river all day. 
Their feet were cut by the rocks. 
They were ill from being wet so much. 
It was hot in the day and cold at night. 
They had no wood but willow. 
They could not make a good fire. 
But they had enough to eat. 
Then the river grew very narrow. 
The canoes could not go up it. 
The soldiers put the canoes under water with rocks in them. 
They made another cache. 
In it they put skins, plants, seeds, minerals, maps, and some medicines. 
Captain Lewis and some men went ahead. 
They were looking for Indians. 
They wanted to buy some horses. 
After a time the river grew so narrow that a soldier put one foot on one
bank and his other foot on the other bank. 
Then he said, “Thank God, I am alive to bestride the mighty Missouri.” 
Before this, people did not know where the Missouri began. 
A little way off was the beginning of the mighty Columbia River. 
The soldiers reached this place in August. 
Captain Lewis was very happy as he drank some cold water from the
beginnings of these two rivers. 
Captain Clark and the other men were coming behind. 
Sacajawea was with them. 
They had all the goods and walked slowly.

a nise      grease        pound
bread       mixed         pow der
hun gry     mush          roast ed
tastes      um brel la    yamp

SACAJAWEA FINDS ROOTS AND SEEDS.

Far up on the Missouri, Sacajawea knew the plants that were good to
eat. 
The captains and soldiers were glad that she did. 
They had only a little corn left, and there were not many animals
near. 
Sacajawea told Captain Clark all about the yamp plant, as her tribe knew
it. 
It grew in wet ground. 
It had one stem and deeply cut leaves. 
Its stem and leaves were dark green. 
It had an umbrella of white flowers at the top of the stem. 
The Indian women watched the yamp until the stem dried