66 THE FORCING GARDEN. 
crops, without any loss of time, and this house will 
answer the purpose exactly. 
A pit four feet wide should run round three sides 
of the house, 7.e. along the two sides, and across the 
further end from the door. This section of it across 
the end will be found very useful for forcing Rhubarb 
and Asparagus, or for plunging pots of forced Roses, 
Lily-of-the-valley, &c. The side pit on the south will 
be the best for winter Cucumbers, and the other side 
will be found the best for the succession of summer 
Cucumbers. The vines will cover the whole of the 
roof, or nearly so. It will be seen by the illustration 
that the pit is so situated as to admit of a pipe running 
between the wall of the house and-.the pit to supply the 
heat at the lowest part of the house on.the south side, 
but none on the north side, where it is not really wanted 
for summer Cucumbers. But for growing winter 
Cucumbers a flow-and-return pipe is indispensable. 
The pits may be filled with half stable dung and 
half leaves, which should be well packed and thoroughly 
mixed, the beds being well trodden in and quite filled. 
The manure will sink by fermenting. 
For this house a good boiler is necessary, such as 
the thirty-six-inch tubular saddle boiler, 2.e. thirty-six 
inches long, which will heat about 450 feet of four-inch 
pipe well. The price is about 7/1. Or the improved 
conical boiler of thirty inches, which will heat about 
600 feet of four-inch pipe, the cost of which is 10/. This 
last is a powerful boiler, causing but little trouble, and 
perhaps the most economical as regards firing and 
attention, and, in conjunction with the sure and safe cir- 
cumstances connected with ‘double glazing’ of such 
a house, no better or Jess expensive boiler can be had. 
