spring or autumn, or it may be raised from seed. It does very well in
the open during the summer, placed against a wall or trellis-work, but
will not stand the cold. In the greenhouse it reaches perfection, and
blooms in July. Height, 10 ft.

Mazus Pumilio.--A pretty diminutive herbaceous plant. When grown in
peat and sand in an open situation it survives from year to year, but
it will not live through the winter in cold clay soils. Its pale green
foliage is seen to advantage in carpet bedding, and its branched
violet flowers, put forth from June to September, make it a desirable
rock-work plant. It may be increased by transplanting, at the end of
April, the rooted stems which run under the surface of the ground.

Meconopsis Cambrica(_Welsh Poppy_).--An ornamental hardy perennial,
often found on English rocks. It may be grown in any light, rich soil,
is easily raised from seed, and blooms in June. Height, 1-1/2 ft.

Medlars.--These trees will grow on any well-drained soil. The Dutch
Medlar is most prized, as it bears the largest fruit. It is raised
from seed, and usually trained to a standard form. The Nottingham and
Royal are also excellent varieties. Any special variety may be grafted
on to the seedlings. On deep soils it is best grafted on the Pear
stock; on light, sandy soil it may be grafted on the White Thorn. No
pruning is required, beyond cutting away cross-growing branches.

Megasea.--This hardy herbaceous plant flowers from April to June.
A light, sandy soil suits it best. It may be grown from seed or
multiplied by division. Height, 1 ft.

Melissa Officinalis.--A hardy perennial, flowering in July. Any soil
suits it. It is increased by division of the root. Height, 1 ft.

Melittis Melissophyllum (_Large-flowered Bastard Balm_).--This
handsome perennial is not often seen, but it deserves to be more
generally grown, especially as it will thrive in almost any soil;
but to grow it to perfection, it should be planted in rich loam. It
flowers from June to August, and may be increased by division of the
roots any time after the latter month. Height, 11/2 ft.

Melon.--Sow from January to June in pots plunged in a hotbed, the
temperature of which should not be under 80 degrees. When the plants
have made four or five leaves, set them out in a house or hotbed
having a temperature ranging from 75 to 85 degrees. Keep the plants
well thinned and water carefully, as they are liable to damp off at
the collar if they ha