1851. Macdougal's inverted garden syringe (fig. 474.) is a very useful instrument for washing the under sides of the leaves of plants and shrubs, and especially those of trees trained against trellises in hothouses. The different parts of this instrument, in addition to the cylinder or common syringe tube (f), are, a bent tube (a), which screws into the extremity of the straight tube; a convex rose for spreading the water (e), which screws on either to the bent tub or the straight tube; straight roses drilled with large and small holes (d d); a flap valve (c), which may be made either of leather or of metal, and beneath which there is a wire grating to exclude impurities, when the water is drawn in by the large opening in the centre of each kind of rose (b),�this is a subsequent improvement by Mr. Macdougal; a hollow screw for keeping in the valve and netting (g), and a punch (h), which are sent along with the syringe to enable every gardener to punch out his own leather valves (i). It will be obvious from the above, that this instrument may be either used as an inverted syringe, or be changed into a common or straight syringe at pleasure. (Gard. Mag. vol. vi. p. 305.)
