Descriptidn of a Pit for Pines', Afcions, fi'C. 
491 
with this green mould, yet the bark was free from cracks. The bark of 
the part thus dressed became in a short time clear, and entirely free, 
whilst the remainder of the tree was still clothed in its green garb. I 
would recommend'all gardeners, who have trees in this condition, to 
give them a dressing once or twice in the winter season, and I doubt not 
that it will answer their highest expectations, 
A Journeyman Gardener. 
Article VI.— Description of a Pit for Pines, Melons, 8^c, 
erected at the Marquis of Stafford's, Trentham, Stafford¬ 
shire. By Mr. John Woolley, Gardener there. 
Having in these gardens some old forcing frames of little use, in con¬ 
sequence of the greater part of the pit-room being taken up with flues 
and cavities, I was induced to take them down and re-build them after 
a plan of my own, which I have found to answer extremely well for 
pines, melons, and cucumbers; and as by this plan, much less room is 
lost, and a sufficiency of heat produced with full one-third less fuel, 1 
consider it to be an improvement upon the old system of building fire- 
frames. 
The following is a description.—Length of the frame, from B to C, 
64 feet 6 inches; width, from D to E, 13 feet 6 inches; height, from 
F to G, 5 feet 4 inches; base, H to I, 5 feet 6 inches; v^alls 9 inches; 
pillars, 9 inches thick and 2 feet high, upon which nine-inch arches are 
sprung; distance between the pillars, 3 feet; width of the flue, 10 in¬ 
ches; flue-w'alls, 3 inches; cavity in front of the flue, 9 inches; from 
the flue to the pillars, 6 inches; and from the pillars to the pit-wall, 
6 inches. From the front wall to the pillars, is an open space of 2 feet 
7 inches, which admits the heat from the flue, through the arches, into 
the frame. From the outside w all to the top of the pillars, is sprung a 
nine-inch semi-arch, one foot from the top of the flue, which is carried 
the full length of the frame, and returns to the chimney. K, fire-place. 
L, coal-house. M, flue. 
It will be seen, that on the line B C, (ground-plan) there are two 
soot-doors (m m) of cast-iron, which can be opened witn easve whenever 
the flues require cleaning. The dots on the top of the jjillars, (in the 
longitudinal section,) are cramps of iron, whicii pass from the out¬ 
side wall to the inside of the pillar wall, to hold the work firmly 
together, (see transverse section, na.) On tiie line of the fit le, BC, 
(ground plan) are two fly dampers, {?i) which can be used to v.ork one 
or both lengths at pleasure. Tlie pit walls, [hb, Iraiisvorse seciion) arc? 
9 inches thick to within 12 iiiches of t!io top, and are then reduced 
