APPLES GROWING UNDER GLASS. ^ 



ix-branched, fan, and horizontally -trained trees are suitable for the cross trellises. One 

 iiu or horizontally-trained tree suffices for each trellis, or two upright six-branched 

 ordons. By this method four times the extent of bearing surface is obtained than by 

 the roof trellis system. Excellent fruit for general use is borne by the cross-trellis trees, 

 whilst the cordon trees trained part of the way up the roof produce handsome specimens. 

 In a third scheme bush trees occupy the sides of the house, as in F, with pyramids 



Fig. 17. SECTION OF SPAN- ROOF APPLE HOUSE, TEEES PLANTED our. (Scale : inch.) 



References: t, 9-inch brick wall ; u, 4^-inch brick walls, built in cement ; v, sill, 4| inches, bevelled ; w, side 

 lights, opening whole length of house ; x, head, 4| by 3 inches, bevelled ; y, rafters, 7 by 3 inches ; z, top lights, 

 opening whole length of house ; a, capping, projecting over joints of top lights ; b, movable lights, 2 inches thick ; 

 c, 1-inch iron tie bar ; d, pillars, l|-inch iron tube ; e, batten paths ; /, border, 2 feet deep ; g, 9-inch brick pillars ; 

 h, rubble, 1 foot thick ; ?', 4-inch tile drains. Q, cordon apple tree trained to wire trellis, 1 foot from glass. B t 

 ingle vertical cordon. S, double vertical cordon. T, four-branched vertical cordon. U, columnar pyramid. V, 

 bush apple tree. 



in the central part, two rows of trees 6 feet asunder, or three rows of columnar trees 

 6 feet apart in the lines, arranged in " opposite vacancy " order. 



Yet a fourth arrangement merits attention, namely, half-standard trees in the centre 

 of the house, planted 6 feet apart, thinning to 12 feet, with low-stemmed trees 6 feet 

 from the sides of the house, the position of the lines of trees being indicated at the 

 crosses (Fig. 17). The trees are trained with round open heads so that light penetrates- 



VOL. II. F 



