“Simply for the sake of saving time,” was the answer; “now-a-days only those spots are selected for astronomical observations where they can be made most conveniently and in the shortest possible time. In Europe the nights are scarcely ever sufficiently clear to use our now so powerful glasses to advantage. There, on the contrary, during several months of the year the sky is so bright and transparent that one can even with the naked eye observe the moons of Jupiter and the phases of Venus. This had been known many years ago to the American Stoddard, who even called Herschel’s attention to the fact, but that was not the time for taking advantage of such excellent opportunities. Not until the beginning of this century was the foundation-stone to be laid of the central observatory, as it is called; the glorious building was erected at the joint expense of all civilised nationalities, the latter including the Persians themselves, who have long ceased to be behind us Europeans. I need scarcely assure you that this institution is amply provided with the most excellent instruments, and that it has a staff of scientific men second to none for making the necessary observations.”
Calculatoria.
“Then at last,” said I, “the science of astronomy has wandered back to the cradle of its infancy, the soil of Chaldea. But what has become of the once so celebrated observatories of Leiden, Greenwich, the Pulkowa, etc., etc.?”
They have been changed into calculatoria, as in fact they had been already for some time past. Among them are distributed the observations made at the central observatory, and these they have to work out. At the same time these calculatoria continue to be of some use to the young astronomer; having there to encounter no end of difficulties, he may learn the value of the Latin adage, Per ardua ad astera, and so grow ultimately into a hard-working and accurate observer.
With regard to the practical results already obtained at the Orumiah observatory—in consequence of our knowledge of the celestial bodies having so considerably increased—I merely wish to call your attention for a moment to yonder map and the words printed underneath. I will rather not offend you by giving you any warning or advice in the matter.
Tin Mines in the Moon.
I followed the direction of his finger, and saw an immense “poster,” on which I recognised at a glance the well-known lunar district of Tycho; of course I was acquainted with its ring mountains and the bright silver beams radiating as from a common centre; these were the words on the placard:
GREATEST DISCOVERY OF THE AGE!