Green-Mountain freeman. [volume] (Montpelier, Vt.) 1844-1884, 1871-07-26

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car, and see the flags waving from the car.
Steadily she rose, growing smaller and
smaller Eddie and the others watched
till it seemed like tiny black spot far
away over their heads, and then the crowd
dispersed, all wondering when the balloon
would come down.
Eddie was very quiet during the first
part of his homeward ride, and so silent
that brother John almost forgot his pres
ence, till he abruptly asked, lsay brother
J ohm, how will he let it down again when
he gets tired of his ride in the air
In the top of the balloon answered
/ brother John, is valve. which opens and
closes by means of a long string hanging
down where the man can reach it. When
/ he wishes to descend he pulls this string
and lets the air escape gradually. If he
/ finds he is coming down too fast he closes
/ the valve and throws oat ballast which he
has carried up for weight. The throwing
out the ballast lightens the balloon and
starts her on her upward course again.
/ Eddie could think or talk Of nothing
that evening but the men in the balloon,
and for several days there was no one
more interested in the daily paper than
he, for he was looking to find out where
the men came down, and how far they had
gone, and how they Jared in their aerial
voyage.
A few days after the events We have Just
narrated, Eddie heard brother Johns
CHEEKY voice calling him to the summer
house in the garden, and when he reache
it he found spread out on brother Johns
workable there curious assemblage of
articles. There was bottle marked sui
phuric acid, another that looked like clear
water, few bits Of zine, and little red
dish-brown india-rubber bag. Eddie Won
dered what they were for, but his brother
had left, and Eddie had been trained to
keep his hands off such things as did not
belong to him. so he stood quietly by,
waiting for brother John return.
When he came he brought another bot
tie and brush and said, Now, Eddie, we
will make a toy balloon and fill it with
real hydrogen gas
Where will you get the silk bag for
the balloon -
We will use this little india-rubber
one.
That is so very small" answered Ed
die.
Put your mouth to the tube and blow
in it," said his brother.
Eddie did so, and was pleased to find
his little bag swell out to thin rose-col-
ored ball. nearly as large as his head He
knew that this would not rise in the air,
I because it was filled with common air, and
50 he patiently awaited the manufacture of
the hydrogen gas.
What are you going to make it out
OFF, asked he
d" Out Of water answered his brother.
Sc Water Is made Of two gases, hydrogen
and oxygen now, if | put some thing into
the water that Will draw the oxygen,
the hydrogen will be set free, and as it IS so
light it viii rise through the tube in the
cork | shall tie the in iia-rubber bag to
the end Of the tube ana the hydrogen will
pass into it.
What will you use to separate the oxy-
zen and hydrogen p
These bit OF zinc. Do you see that the
cork has two tubes, one with a funnel at
the end | shall keep my fuger over
that opening, except when | am pouring
something through the funnel The india
rubber bag Is At the end OF the other open
ing ready 70 receive the gas that will rise;
now I am ready Do you know how
chemists write water
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