ABOUT TELESCOPES. \ 263

trivance for lifting or lowering the chair. There is a telescope in
Washington that has an object-glass measuring twenty-six inches
in diameter.”

Rick thought it would be nice sometime to slip down from Concord
and ride in that “cunning chair” at Cambridge, while Ralph inquired
how they could “keep a telescope i

 
 
  
   
   
  

from wriggling.”
“They are very particular

about the. support of the

telescope,” said Uncle Nat.

“In observatories often,

_ the telescope rests on a Me Me
solid tower built up from (!''/
the ground. That makes |
it very steady. If resting |
on the floor of a building,
it would shake with the
building. When a man is

AEE Etat,
TUTATCUVUE)
mma EN til

ce mt
Il

looking at a star, he can
not bear to have the tele-
scope jarred in the least.
One of the planets’ is
Saturn, and you do not

know what a beautiful . =

object it is when seen
through a telescope of
good magnifying powers.

   

 

ee

—

 

Soy

 

 

 

 

 

 

TELESCOPE AT WASHINGTON.

 

 

I will tell you about it sometime when I have a good chance.”
After this talk with the boys, Uncle Nat went out to promenade
the deck with them. When they had strolled as far as the fore-