Affairs had now assumed a critical aspect, for the College had advanced much money to Ramsden during these fifteen years, and the instrument was still unfinished. An appeal was made by the Provost to Dr. Maskelyne, the Astronomer-Royal of England, for his advice and kindly offices in this emergency. Maskelyne responds--in terms calculated to allay the anxiety of the Bursar--“Mr. Ramsden has left property behind him, and the College can be in no danger of losing both their money and the instrument.” The business of Ramsden was then undertaken by Berge, who proceeded to finish the great circle quite as deliberately as his predecessor. After four years Berge promised the instrument in the following August, but it did not come. Two years later (1806) the Professor complains that he can get no answer from Berge. In 1807 it is stated that Berge will send the telescope in a month. He did not; but in the next year (1808), about twenty-three years after the great circle was ordered, it was erected at Dunsink, where it is still to be seen. The following circumstances have been authenticated by the signatures of Provosts, Proctors, Bursars, and other College dignitaries:--In 1793 the Board ordered two of the clocks at the Observatory to be sent to Mr. Crosthwaite for repairs. Seven years later, in 1800, Mr. Crosthwaite was asked if the clocks were ready. This impatience was clearly unreasonable, for even in four years more, 1804, we find the two clocks were still in hands. Two years later, in 1806, the Board determined to take vigorous action by asking the Bursar to call upon Crosthwaite. This evidently produced some effect, for in the following year, 1807, the Professor had no doubt that the clocks would be speedily returned. After eight years more, in 1815, one of the clocks was still being repaired, and so it was in 1816, which is the last record we have of these interesting timepieces. Astronomers are, however, accustomed to deal with such stupendous periods in their calculations, that even the time taken to repair a clock seems but small in comparison. The long tenure of the Chair of Astronomy by Brinkley is divided into two nearly equal periods by the year in which the great circle was erected. Brinkley was eighteen years waiting for his telescope, and he had eighteen years more in which to use it. During the first of these periods Brinkley devoted himself to mathematical research; during the latter he became a celebrated astronomer. Brinkley’s mathematical labours procured for their author some reputation as a mathematician. They appear to be works of considerable mathematical elegance, but not indicating any great power of original thought. Perhaps it has been prejudicial to Brinkley’s fame in this direction that he was immediately followed in his chair by so mighty a genius as William Rowan Hamilton.