They shook the depths of the desert's gloom
With their hymns of lofty cheer.

5. What sought they thus afar?
Bright jewels of the mine?

The wealth of seas? the spoils of war? —
They sought a faith's pure shrine!

6. Ay, call it holy ground,

The soil where first they trod!

They have left unstained what there they found,-
Freedom to worship God!

LESSON LXXVI.

suf-fi-cient-ly
prof-it-a-ble
man-u-fac-to-ry

glass

fur-nace

cir-cu-lar

whirl brit-tle

ex-ten-sion

tough pot-ash in-tense-ly

GLASS-MAKING.

HE materials of which glass is composed are sand

and potash, or soda. To these are generally added red-lead, and a little lime; and if the glass is to be colored, various compounds of metals are mixed with them. Then the whole is intensely heated in a furnace.

It requires a red heat of sixty hours to prepare the material. Hard and brittle as it is, when sufficiently heated, all its brittleness is gone, and the workman may give to it any form he pleases. It is even then

tougher and more capable of extension than many solids or any other liquid.

3. When red-hot the workman may press it into a mold, or he may take a lump of it upon the end of an iron tube, and by blowing into the tube with his mouth while the glass is still hot, may swell it out into a hollow ball. He may mold that ball into a bottle, or he may draw it out lengthwise into a pipe.

4. He may cut it open into a cup; he may sever it with shears, whirl it round with the edge in the fire, and make a circular plate; or he may roll it out into sheets, and spin it into threads as fine as a cobweb. All this may be done, and is done with large quantities every day, in less time than it takes to tell of it.

5. Nearly all glass, except glass for mirrors, is what is called blown. The machinery for blowing it is very simple, consisting only of an iron pipe and the lungs of the workman; and the process is perfected in all its stages by great subdivision of labor, producing extreme neatness and quickness in those at work on it.

6. The cost of glass is almost wholly made up of the wages of labor, as the materials are very abundant and cheap, and the article easily worked. But glass-making requires a great deal of knowledge and skill, and can only be made profitable at large manufactories, and those must be kept at work day and night.

composed, made. extension, being drawn out. manufactory, place where things are made.

solid, a hard substance. liquid, that which flows like

water.

perfected, finished.

LESSON LXXVII.

THE MIRACLE AT THE RED SEA.

Exodus xiv. 5-31.

ND it was told the king of Egypt that the people fled and the heart of Pharaoh and of his servants was turned against the people, and they said, Why have we done this, that we have let Israel go from serving us?

2. And he made ready his chariot and took his people with him: and he took six hundred chosen chariots, and all the chariots of Egypt, and captains over every one of them. And the LORD hardened the heart of Pharaoh king of Egypt, and he pursued after the children of Israel: and the children of Israel went out with a high hand.

3. But the Egyptians pursued after them (all the horses and chariots of Pharaoh, and his horsemen, and his army) and overtook them encamping by the sea, beside Pi-hahiroth, before Baal-zephon.

4. And when Pharaoh drew nigh, the children of Israel lifted up their eyes, and behold, the Egyptians marched after them; and they were sore afraid: and the children of Israel cried out unto the Lord."

*

5. And they said unto Moses, Because there were no graves in Egypt, hast thou taken us away to die in the wilderness? Wherefore hast thou dealt thus with us, to carry us forth out of Egypt? Is not this the word that we did tell thee in Egypt, saying, Let us alone, that we may serve the Egyptians? For

it had been better for us to serve the Egyptians than that we should die in the wilderness.

6. And Moses said unto the people, Fear ye not, stand still, and see the salvation of the LORD, which he will show to you to-day: for the Egyptians whom ye have seen to-day, ye shall see them again no more for ever. The LORD shall fight for you, and ye hold your peace.

shall

7. And the LORD said unto Moses, Wherefore criest thou unto me? Speak unto the children of Israel that they go forward: But lift thou up thy rod, and stretch out thy hand over the sea, and divide it: and the children of Israel shall go on dry ground through the midst of the sea.

8. And I, behold, I will harden the hearts of the Egyptians, and they shall follow them: and I will get me honor upon Pharaoh, and upon all his host, upon his chariots, and upon his horsemen and the Egyptians shall know that I am the LORD, when I have gotten me honor upon Pharaoh, upon his chariots, and upon his horsemen.

9. And the angel of God which went before the camp of Israel, removed, and went behind them; and the pillar of the cloud went from before their face and stood behind them: and it came between the camp of the Egyptians and the camp of Israel; and it was a cloud and darkness to them, but it gave light by night to these: so that the one came not near the other all the night.

10. And Moses stretched out his hand over the sea; and the LORD caused the sea to go back by a

strong east wind all that night, and made the sea dry land, and the waters were divided. And the children of Israel went into the midst of the sea upon the dry ground: and the waters were a wall unto them on their right hand and on their left.

11. And the Egyptians pursued, and went in after them to the midst of the sea, even all Pharaoh's horses, his chariots, and his horsemen.

12. And it came to pass that in the morning watch the LORD looked unto the host of the Egyptians through the pillar of fire and of the cloud, and troubled the host of the Egyptians and took off their chariot-wheels, that they drave them heavily: so that the Egyptians said, Let us flee from the face of Israel; for the Lord fighteth for them against the Egyptians.

13. And the LORD said unto Moses, Stretch out thy hand over the sea, that the waters may come again upon the Egyptians, upon their chariots, and upon their horsemen. And Moses stretched forth his hand over the sea, and the sea returned to his strength when the morning appeared; and the Egyptians fled against it; and the Lord overthrew the Egyptians in the midst of the sea.

14. And the waters returned, and covered the chariots, and the horsemen, and all the host of Pharaoh that came into the sea after them: there remained not so much as one of them. But the children of Israel walked upon dry land in the midst of the sea; and the waters were a wall unto them on their right hand and on their left.