The steel tube of the Yerkes telescope is 64 feet long, and the 90-foot rotating dome, also of steel, weighs nearly 150 tons. The observatory, of gray Roman brick with gray terra-cotta and stone trimmings, is in the form of a Roman cross, with three domes, the largest dome at the western end covering the great telescope. Of the two smaller domes, one will contain a 12-inch telescope, and the other a 16-inch. Professor Young says of the Yerkes telescope, "It gathers three times as much light as the 23-inch instrument at Princeton; two and three-eighths as much as the 26-inch telescopes of Washington and Charlottesville; one and four-fifths as much as the 30-inch at Pulkowa; and 23 per cent more than the gigantic, and hitherto unrivalled, 36-inch telescope of the Lick Observatory. Possibly in this one quality of 'light,' the six-foot reflector of Lord Rosse, and the later five-foot reflector of Mr. Common, might compete with or even surpass it; but as an instrument for seeing things, it is doubtful whether either of them could hold its own with even the smallest of the instruments named above, because of the reflector's inherent inferiority in distinctness of definition." Professor Young thinks the Yerkes telescope can hardly hope for the exceptional excellence of the "seeing" at Mount Hamilton, Nice, or Ariquipa, at least at night. The magnifying power of the Yerkes telescope is so great, being from 200 to 4,000, that the moon can be brought optically within sixty miles of the observer's eye. "Any lunar object five or six hundred feet square would be distinctly visible,--a building, for instance, as large as the Capitol at Washington." Since the death of Mr. Lick others have added to his generous gifts for the purchase of special instruments, for sending expeditions to foreign countries to observe total solar eclipses, and the like. Mrs. Phoebe Hearst has given the fund which will yield $2,000 or more each year for Hearst Fellowships in astronomy or other special work. Colonel C. F. Crocker has given a photographic telescope and dome, and provided a sum sufficient to pay the expenses of an eclipse expedition to be sent from Mount Hamilton to Japan, in August, 1896, under charge of Professor Schæberle. Mr. Edward Crossley, a wealthy member of Parliament for Halifax, England, has given a reflector and forty-foot dome, which reached Mount Hamilton from Liverpool in the latter part of 1895.