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 545
gure, evento those who have not (like most gardeners) acquired a smatter-ing of geometry; viz. that the line a b is equal in length to theline be; and that the correct height of the tree will be obtainedby adding to it the height of the operators eye from the ground,and half the diameter of the… … \{
