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 546
pcEdia of Architecture and Architectural Magazine^ and nowestablished as an architect and landscape-gardener in the city ofWorcester. There is a small instrument, which I have employed for as-certaining the heights of trees, that I think might be useful tothe contributors to your Arboretum… … on a principle which I shall presently explain. It is made of apiece of thin board of the form shown inj^. 91., graduated infeet on the lower edge, or circumference, and with a line and of ascertaining the Heights of Trees. 521 plummet suspended from the apex, or centre, of the quadrant.In using…
