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"Have gone to get reinforcements and attack us," was the instant reply, "they must have trailed us with the powerful lenses of which the Japanese have the secret and which are used in their telescopes. They are now certain that we have found the ship and are coming back. It's simple, isn't it?"
At the same time a large steamer was observed, steering east, on the extreme verge of the southern horizon; and by the aid of their very powerful telescopes the travellers were able to identify her as one of the Atlantic liners.
Percival Lowell, whose observatory at Flaggstaff, Arizona, is finely situated for the purpose, while he also has one of the best if not the largest of telescopes. There the canals are seen as fine dark lines; but, even then, they must be fifty miles in breadth, so that the word "canal" may be regarded as a misnomer.
Even electron telescopes on the ground and electron telescopes were ultimately optical telescopes with electronic amplification could not get a good image of the ship through sunlit atmosphere. "Chee?" asked Murgatroyd solicitously. "Chee-chee-chee?" "Is it blueskins?" shakily demanded the voice from the guard boat. "Ground! Ground! Is it blueskins?"
And then for the first time you recall that those grey trees in the distance must be behind the German lines; that distant roof and chimney notched against a background of scrub is in German ground; the pretty blue hill against which the willows in the plain show out like a row of railway sleepers is cut off from you by a barrier deeper than the Atlantic the German trenches; and that from all yonder landscape, which moves behind the screen of nearer trees as you walk, eyes are watching for you all day long; telescopes are glaring at you; brains behind the telescopes are patiently reconstructing, from every movement in our roads or on our fields, the method of our life, studying us as a naturalist watches his ants under a glass case.
He pointed to a table in the hut on which stood several telescopes and microscopes as well one of the former being a large instrument, certainly not less than six feet long, with a diameter of apparently six or eight inches. "Here, you see, I have the means of investigating the wonders of Nature in her grandest as well as her minutest scales.
Thus we spent two more peaceful days riding in the shady lanes and lying on the sunburnt kopjes, sweeping the horizon with the telescopes of Lord Chesham and his pleasant crew; thus we received a telegram from Kimberley advising us to "come here and attend to the business yourselves"; thus we rode away and closed what will remain in my memory as the pleasantest chapter in the campaign.
Frauenhofer, at the beginning of the nineteenth century, while applying Dollond's discovery to make large achromatic telescopes, studied the dispersion of light by a prism. Admitting the light of the sun through a narrow slit in a window-shutter, an inverted image of the slit can be thrown, by a lens of suitable focal length, on the wall opposite.
After we had solemnly been towed by a string of boats to anchor, under the Papen mountains, all Nagasaki appeared to turn out, men, women and children. Thousands of little boats, decorated with flags by day and colored lanterns by night, and filled with people in gala attire, swarmed about us, gazed at us through telescopes, were so thick on the bay one could have traversed it on foot.
As for the general, he and his staff, at the moment of our arrival in their midst, were stationed at the edge of a scanty woodland where telescopes stood and a table with maps and charts on it. Quite with the manner of men who had nothing to do except to enjoy the sunshine and breathe the fresh air, they strolled back and forth in pairs and trios.
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