The gardener's magazine and register of rural & domestic improvement (1826)
Loudon, J. C. (John Claudius), 1783-1843, A. & R. Spottiswoode, printer, United States. Patent Office. Scientific Library, former owner DSI · London : Longman, Rees, Orme, Brown and Green · leaf 548
distance, and then halve theIn either case the result will be correct. A quadrant thus arranged will only be available for the above-mentioned stations; but a series of concentric scales can beformed on the same quadrant, arranged for other stations atvarious distances from the object; and this… … I have never either seen or heard of this instrument havingbeen made or used by any one but myself; but it is so simple,that it is very likely that it has been thought of and acted onbefore. — Bichard Varden. Worcester, September 7. 1835. FloricuUural and Botanical Notices. 523 Art. V. Floriadtural…
