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Enormous stones, massive pieces of wrought-iron, heavy corner-clamps, and huge portions of cylinder had to be raised with an object-glass, weighing nearly 30,000 lbs., above the line of perpetual snow for more than 10,000 feet in height, after crossing desert prairies, impenetrable forests, fearful rapids far from all centres of population, and in the midst of savage regions in which every detail of life becomes an insoluble problem, and, nevertheless, American genius triumphed over all these obstacles.
There was also a large quantity of canvas in and around the grave, with coarse stitching through it and the cloth, as though the body had been incased as if for burial at sea. Several gilt buttons were found among the rotting cloth and mould in the bottom of the grave, and a lens, apparently the object-glass of a marine telescope.
The aperture of your object-glass is sufficient for doing much useful work, but, if I may hazard an opinion to you, do not attempt too much, for it is quality rather than quantity which is now desirable. I would therefore leave the multiplication of objects to the larger order of telescopes, and to those who are given to sweep and ransack the heavens, of whom there is a goodly corps.
I had an abundance of money, few desires that were not bounded by my illuminating mirror on one side and my object-glass on the other; what, therefore, was to prevent my becoming an illustrious investigator of the veiled worlds? It was with the most buoyant hope that I left my New England home and established myself in New York. My first step, of course, was to find suitable apartments.
When the objective is in the tube of the telescope, it is always well to examine this adjustment from time to time, holding the candle so that its light shall shine through the opening perpendicularly upon the object-glass. The observer looks upon one side of the flame, and then upon the other, to see if the images are symmetrical in the different positions.
Quekett was quoting Andrew Ross, the most famous of the three opticians referred to, as calling "135° the largest angular pencil that can be passed through a microscopic object-glass," Mr.
Stars in any other part of the heavens have their beams reflected upon the object-glass by means of a plane rotating mirror placed in front of it. The observer, meanwhile, is looking steadfastly down the bent tube towards the invisible southern pole.
The length of this tube is forty-eight feet, and the diameter of its object-glass six feet; it magnifies 6,400 times, and required an immense erection of brick work and masonry for the purpose of working it, its weight being twelve and a half tons.
Dollond's, applied to the microscopic object-glass, has left all his achievements a mere matter of curious history. Few have been more remarkable for perceiving resemblances and differences than Oken. This is the poetical side of the scientific mind; and he shares with Goethe the honor of that startling and far-reaching discovery, the vertebral character of the bones of the cranium.
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