eet above it; the ridge rising
sufficiently for head room, and to shoot off water. There will be room
for a central path of four feet, and a bed of four feet on each side. An
earth or tile floor and a slate or stone shelf will, with one four-inch
flow and return pipe, complete the arrangements. The less wood and the
less concrete the better; there is nothing like porous red tiles for the
floor and stone for the shelves, with loose planks on edge to keep up
the soil, a few uprights being sufficient to hold them in their places.

==Temperatures== at every point are of great importance. The bed should be
near 80 deg. when the spawn is inserted. The air temperature requisite to
the rising crop is 60 deg. to 65 deg., which is the usual temperature of the
season when Mushrooms appear in pastures. While the bed is bearing a
temperature of 55 deg. will suffice, but at any point below this minimum
production will be slow and may come to a stop. When giving water, take
care that it is at a temperature rather above than below that of the
bed.

==MUSTARD==

==Sinapis alba, and S. nigra==

Mustard is much valued as a pungent salad, and for mixing in the bowl it
may take the place of Water Cress when the latter is not at command.
Mustard is often sown with Cress, but it is bad practice, for the two
plants do not grow at the same pace, and there is nothing gained by
mixing them. The proper sort for salading is the common White Mustard,
but Brown Mustard may be used for the purpose. Rape is employed for
market work, but should be shunned in the garden. As the crop is cut in
the seed leaf, it is necessary to sow often, but the frequency must be
regulated by the demand. Supplies may be kept up through the winter by
sowing in shallow boxes, which can be put into vineries, forcing pits,
and other odd places. Boxes answer admirably, as they can be placed on
the pipes if needful; they favour the complete cutting of a crop without
remainders, and this is of importance in the case of a salad that runs
out of use quickly and is so easily produced. From Lady Day to
Michaelmas Mustard may be sown on the open border with other saladings,
but as the summer advances a shady place must be found for it.

==ONION==

==Allium Cepa==

The onion has the good fortune to be generally appreciated and well
grown almost everywhere. It enhances the flavour and digestibility of
many important articles of food that would fail to nourish us wit