I have the honour to exhibit, through the kindness of the owner, Mrs. Rinington of Tynefield, Penrith, a planispheric astrolabe of English make. It was included among the antiquities and curiosities exhibited at a recent art and industrial exhibition held at that place, and my attention was drawn to it by a member of the committee, who asked by what name it should be catalogued. I must own that I guessed rather than knew that the object was an astrolabe, but as to its uses I was profoundly ignorant; I borrowed the instrument and endeavoured to inform myself. I found this difficult to do, as the treatises on astrolabes are rare and scarce, and it is impossible to obtain a sight of some of them without a visit to London: this I was unable through illness to undertake. The standard work on the subject is Chaucer's Treatise on the Astrolabe; addressed to Ms son Lowys, and dated 1391. This has been most ably edited for the Early English Text Society by Professor Skeat, and to it I am much indebted. There is also an earlier edition by Mr. Brae, in 1870, which I have not seen. There is a valuable paper in The Transactions of the Bristol and Gloucestershire Archaeological Society, vol. xii. entitled Remarks on an Astrolabe, by Robert Taylor, M.A., which gives a description of an astrolabe of English make, the property of Mr. Hyett of Painswick House, Gloucestershire. A paper on the astrolabe, by the late Octavius Morgan, F.S.A., is also interred in the Archaeologia, vol. xxxiv., under the title of Supplementary Observations on an Astronomical and Astrological Table Clock, together with an account of the Astrolabe.