There will bea number of interesting side-shows," though there will be no such striking novelty as the Eiffel Tower was in 1889. Perhaps the big telescope will be the nearest approach to the desired cox. This gigantic apparatus, by far the largest of its kind ever constructed, will be 200 feet long and weigh 21 tons, ruth a lens nearly 50 inches in diameter. As it would be impracticable to point such an immensely long tube at the sky, the: telescope will simply be Inid horizontally. on a series of stone pedestals about thirty -feet high. The telescope will point directly at a largo mirror, 59 inches in diameter, on which the reflection of the moon and other heavenly objects will be observed through the telescope. The mirror works on a pivot controlled by clockwork so as to counteract the effects of: the earth's motion and Keep: the body under observation in the mirror. Clockwork is also used to give a rotary motion to the eye-piece, so that the intersection of the wires across the end of the tube maintains its apparent position in relation to the object. The lens is expected to give a magnifying power of 10,000, so that the moon, which is 238,000 miles away, would appear through the telescope as it would if viewed with the unaided eye at a distance of 24 miles.
Text read from the printed page and cleaned; old type leaves the occasional error.