1698. The fork (figs. 308, 309, and 310.). Of this tool there are three principal species:ï¿½The first (fig. 308.), for working with litter, haulm, or stable-dung; the second (fig. 309.), for stirring the earth among numerous roots, as in fruit trees and flower-borders, or for taking up roots; and the third (fig. 310.), for plunging pots in bark-pits, or for taking up asparagus or other roots. The prongs of the last are small and round, and should be kept clear or polished by use, or by friction with sand. In adhesive soils, a strong two-pronged fork (fig. 309.) is one of the most useful of garden-tools, and is advantageously used on most occasions where the spade or even the hoe would be resorted to in free soils, but especially in stirring between crops.