It need not be explained that astronomical observations must be made out of doors. Further, the whole telescope must be out of doors so as to get an even temperature. This is a fact that the excellent astronomers of the Mikado of Japan did not know until very recently. It seems they constructed a costly telescope and housed it in a costly observatory-house, with an aperture barely large enough for the big telescope to be pointed out at the heavens. Inside, the astronomer had a comfortable fire, for the season was then Winter and the weather cold. But the wise man could see nothing and the belief was getting abroad that the machine was bewitched, or that their Yankee brothers had lawsonized the buyers, when our own David P. Todd, of Amherst, happened along and informed them that the heat-waves which arose from their warm room caused a perturbation in the atmosphere which made star-gazing impossible. At once they made their house over, with openings so as to insure an even temperature, and Prince Fusiyama Noguchi wrote to Professor Todd, making him a Knight of the Golden Dragon on special order of the heaven-born Mikado. The Herschels knew enough of the laws of heat and refraction to realize they must have an even temperature, but they forgot that pasteboard was porous. One night they left their telescope out of doors, and a sudden shower transformed the straight tube into the arc of a circle. All attempts to straighten it were vain, so they took out the lenses and went to work making a tube of copper. In this, brother, sister and genius--which is concentration and perseverance--united to overcome the innate meanness of animate and inanimate things. A failure was not a failure to them--it was an opportunity to meet a difficulty and overcome it. The partial success of the new telescope aroused the brother and the sister to fresh exertions. The work had been begun as a mere recreation--a rest from the exactions of the public which they diverted and amused with their warblings, concussions and vibrations.