ABSTRACT

The expectations of the world outside science are also “exceeding high,” especially in America, and still more especially in the far west. Increase the power in each telescope and whereas in the former no separation is effected, with the larger the dark space between the disks is correspondingly widened. A treatise on astronomy which mentioned nothing discovered with the great Chicago telescope or with the equally large telescope set up at Charlottesville, near Richmond, would be certainly none the worse for the omission. Probably Prof. Hall would be the last to compare his discovery of these two bodies with William Herschel’s discovery of two moons of Uranus, remembering how in his own case a splendid telescope had been constructed for the work by the ablest opticians living, whereas Herschel made his own telescope.